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41dc408c5146b7d94017c9a060818b0a2d3dc412
subsection
74
93
evaluation of
One can show this by carrying out the z-integral formally,C_{ab,T=0} = \sum _{c=a,b} \lambda _c \int ^{\infty }_{-\infty } d\tau \!\ G(\tau ) e^{-u_{c}\Lambda |\tau |},andG(\tau ) &\equiv \int ^{\infty }_{-\infty } d\xi F_{a}(\xi ;\tau ) F_{b}(\Lambda -\xi ;\tau ) \!\ d\xi , \\ F_{a}(\xi ;\tau ) & \equiv \int ^{\infty ...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.025713875889778137, 0.04269877076148987, -0.037906985729932785, -0.02081526815891266, -0.01567249372601509, -0.033939264714717865, 0.030597224831581116, 0.014657672494649887, 0.0005846663843840361, 0.03485489264130592, -0.014886579476296902, 0.00419281143695116, 0.032169051468372345, 0....
d7546ea61f0550e04ee15f40ed392141385297fb
subsection
75
93
evaluation of
When the Luttinger parameters get much smaller/larger than 1, \lambda _{a}+\lambda _b \rightarrow +\infty , the upper bound of C_{ab,T=0} as well as |A_{ab,T=0}| diverge;&C_{\rm u} \rightarrow \frac{\alpha }{\Lambda _{\cal E}} \Gamma \Big (\frac{1}{2}\Big ) \big (\lambda _{a}+\lambda _b\big )^{\frac{1}{2}}, \\ &|A_{ab,...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.049906566739082336, 0.026830501854419708, -0.050059184432029724, 0.0038650878705084324, -0.001364990370348096, -0.030722297728061676, -0.006745780352503061, 0.01745966635644436, 0.012324022129178047, 0.0071425908245146275, -0.012247712351381779, 0.012629261240363121, 0.029653962701559067,...
edba2ce2c2ffdcc2f875ce54ccf9a94648d8fdbb
subsection
76
93
parameters used in Fig.
To obtain theoretical phase diagram at finite temperature as in Fig. REF , we solved numerically the RG equations Eqs. (REF ,,) for H<H_0 and Eqs.(REF ,,) for H_{0}<H<H_1. Thereby, a set of parameters in the RG equations are chosen in the following way.C_{ab} has an engineering dimension of [length]/[energy]. From Eq. ...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.017076008021831512, -0.014756479300558567, -0.04303337261080742, -0.02264593169093132, 0.017060749232769012, -0.06046036258339882, -0.0065198615193367004, -0.038730036467313766, 0.009682509116828442, 0.027727531269192696, 0.012604811228811741, 0.016053585335612297, 0.02353101409971714, ...
2a7833e2827be35ed4189ab6a3f9ccfb913099e6
subsection
77
93
parameters used in Fig.
(REF ) (c=1,2,3,4) is set to the high-energy cutoff in the energy scale, \Lambda _{\cal E}=40 [meV] . For the Luttinger parameters K_a in Eq. (REF ), we use Eq. (). The intra-pocket forward scattering strengths in Eq. () are set as,g_{4,a=1} = g_{4,a=4} &= \tilde{g}, \\ g_{4,a=2} = g_{4,a=3}&= \tilde{g}, \\ g_{2,a=1} =...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.08278048038482666, 0.053355563431978226, -0.03562124818563461, -0.019764145836234093, -0.016528625041246414, -0.004792232997715473, 0.010660428553819656, 0.02205342799425125, 0.010729107074439526, 0.004036769270896912, -0.019962549209594727, 0.051005229353904724, 0.012117939069867134, 0...
79b781fba957b3be29b234557e06c357fcc9ae83
subsection
78
93
calculation of optical conductivity
In the main text, we describe how the longitudinal optical conductivity along the field direction behaves in the SNEI phases as well as the metal-insulator transition points at H=H_{c,1} and H=H_{c,2}. According to the linear response theory, the conductivity is given by a retarded correlation function between an elect...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.06141440197825432, 0.00023596722166985273, -0.04365822672843933, -0.024452878162264824, -0.011845077387988567, -0.009793355129659176, -0.04347517341375351, 0.00716577610000968, 0.006620429921895266, 0.06007201224565506, -0.03853273019194603, -0.018107028678059578, 0.02111215330660343, 0...
4498918870108bff6b5c27989fb9e769a1741263
subsection
79
93
calculation of optical conductivity
The Fourier transform is taken with respect to the spatial coordinate z, imaginary time \tau and the chain index j (y_{j}\equiv 2\pi l^2 j/L_x);\phi _{a,j}(z,\tau ) \equiv \frac{1}{\beta L_z N} \sum _{K} e^{ik_z z + ik y_j - i\omega _n \tau } \phi _{a,{K}}.In the following, we briefly summarize how to calculate the ret...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.0052992552518844604, 0.027179189026355743, -0.021151239052414894, -0.007008445914834738, -0.009743914939463139, 0.018602712079882622, -0.0028346627950668335, 0.0017416197806596756, -0.0069435881450772285, 0.0720912367105484, -0.0042882380075752735, 0.008324675261974335, -0.013787982985377...
e2c613a7638b0ace1dcda8099ac096bc75f103f1
subsection
80
93
calculation of optical conductivity
They are given by{A}_{K} &\equiv \left[\begin{array}{cccc} \frac{u_1}{\pi K_1}k_z^2+2M(0) & 2M(0) & 2M^*(k) & 2M^*(k) \\ 2M(0) & \frac{u_4}{\pi K_4}k_z^2+2M(0) & 2M^*(k) & 2M^*(k) \\ 2M(k) & 2M(k) & \frac{u_2}{\pi K_2}k_z^2+2M(0) & 2M(0) \\ 2M(k) & 2M(k) & 2M(0) & \frac{u_3}{\pi K_3}k_z^2+2M(0) \\ \end{array}\right], \...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.03913306072354317, 0.050763089209795, -0.0677044689655304, -0.006471301894634962, -0.016681917011737823, -0.03226493299007416, 0.02994503267109394, 0.011698709800839424, 0.027396194636821747, 0.015460916794836521, -0.03641633689403534, 0.014163604006171227, 0.015903528779745102, 0.02689...
546f00e8cc3cb5363bff630cedbea26e2ae799b4
subsection
81
93
calculation of optical conductivity
With the new basis, the gaussian action is given by\mathcal {S}_{\rm MF}=\frac{1}{2\beta L_zN}\sum _{{K}}\begin{pmatrix} \vec{\Phi }^{\dagger }_{K} & \vec{\Theta }^{\dagger }_{K} \end{pmatrix}[{M}_{c,{K}}]\begin{pmatrix} \vec{\Phi }_{K} \\ \vec{\Theta }_{K} \end{pmatrix},and[{M}_{c,{K}}] \equiv \left[\begin{array}{cc} ...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ 0.0032145055010914803, 0.008210820145905018, -0.03436945378780365, -0.018466714769601822, 0.022297412157058716, -0.04899020865559578, -0.014346042647957802, -0.02338099665939808, -0.010362726636230946, 0.05362977832555771, -0.03763546794652939, 0.038276463747024536, -0.02185482159256935, 0...
7dc9481914a3f756a81f565a6cc51f7ab37232cb
subsection
82
93
calculation of optical conductivity
The real part of the retarded correlation function is nothing but the optical conductivity \sigma _{zz}(\omega );\sigma _{zz}(\omega ) &= {\rm Re} \!\ \Big \lbrace \overline{\sigma _{zz}(i\omega _n)}_{|i\omega _n =\omega +i\eta }\Big \rbrace , \\ \overline{\sigma _{zz}(i\omega _n)} &= {\vec{e}_{+}}^{\!\ T} \!\ {U}^{-1}...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.5517/cc6wfdw", "end": 2004, "openalex_id": "https://openalex.org/W4397079776", "raw": ". X. T. Zhang, and R. Shindou, Phys. Rev. B 95, 205108 (2017).", "source_ref_id": "75ff70ee5b93b5387b0d7c6242daf16e95d3895d", "start": 146...
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.01610221154987812, 0.03550117835402489, -0.04514724388718605, -0.004124761093407869, 0.012446780689060688, -0.024908823892474174, -0.022283630445599556, 0.010348151437938213, -0.010531304404139519, 0.04224732145667076, -0.017445335164666176, -0.008066368289291859, -0.0075169093906879425, ...
ca3a5bb2ea336c6050faafa3ab2187f4db290e4a
subsection
83
93
calculation of optical conductivity
(REF ,,REF ,REF ). [{P}(i\omega _n)] is a 4 by 4 diagonal matrix that represents an effect of the disorder,[{P}(i\omega _n)] \equiv \left[\begin{array}{cccc} g_y m(i\omega _n) & & & \\ & 0 & & \\ & & 0 & \\ & & & 0 \\ \end{array}\right].m(i\omega _n) is a sum of the (\Phi _{+},\Phi _{+})-component of the inverse of the...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.007064781617373228, 0.00866694562137127, -0.04852268844842911, -0.03439312428236008, 0.005741088651120663, -0.0026244977489113808, 0.0061072977259755135, 0.04986545443534851, 0.0033035101369023323, 0.009979194961488247, -0.060760173946619034, 0.05291719734668732, -0.003442745888605714, ...
fc8d5f51cffecc3ce548b3e090d98d148b7d2342
subsection
84
93
calculation of optical conductivity
(REF ), we obtain the imaginary-time optical conductivity as&\overline{\sigma _{zz}(i\omega _n)} = \\ & \ \ \ \ \frac{e^2 \omega _n}{\pi ^2 l^2} {\vec{e}_{+}}^{\!\ T} \Big [\frac{\pi ^2}{k^2_z} \big ({D}{A} - {D}{T}{P}{T}\big ) + \omega ^2_n {1}_{4\times 4} \Big ]^{-1}_{|{k}={0}} {U}^{-1} \!\ \vec{e}_{+}.The {k}={0} li...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.04315977916121483, 0.03059948980808258, 0.029897456988692284, 0.0044716461561620235, -0.008073381148278713, -0.026448337361216545, -0.007409502286463976, -0.014139863662421703, 0.005852819886058569, 0.023060264065861702, -0.013079183176159859, 0.00878304522484541, -0.0008164950995706022, ...
38aebfd46af58f09980f6b1b261d1f5ca2bc2bd3
subsection
85
93
calculation of optical conductivity
To see this, use Taylor expansions of {A} and {D} in small k;{A}_{K} = 2M(0) {A}_0 + k^2_z {A}_1 + {\cal O}(k), \\ {D}_{K} = 2M(0) {D}_0 + k^2_z {D}_1 + {\cal O}(k),with{A}_0 \equiv \left[\begin{array}{cccc} 1 & 1 & 1 & 1 \\ 1 & 1 & 1 & 1 \\ 1 & 1 & 1 & 1 \\ 1 & 1 & 1 & 1 \\ \end{array}\right], \ {D}_0 \equiv \left[\be...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.05505218729376793, 0.07220259308815002, -0.00031875682179816067, -0.01835581474006176, -0.024001412093639374, -0.007053180132061243, 0.00789620541036129, -0.010238364338874817, 0.016829978674650192, 0.02973855659365654, -0.01574663445353508, -0.01049012690782547, 0.029311323538422585, 0...
dde084fd15693965895f522e7f2b6879e122b10e
subsection
86
93
calculation of optical conductivity
(REF ) as,&\overline{\sigma _{zz}(i\omega _n)} = \frac{e^2 \omega _n}{\pi ^2 l^2} \!\ {\vec{e}_{+}}^{\!\ T} \bigg [2\pi ^2 M(0) {D}_0{A}_1 \\ &\hspace{0.0pt} + \pi \Big (2M(0)-\frac{g_y m(i\omega _n)}{4}\Big ) {U}^{-1} {A}_0 + \omega ^2_n {1}_{4\times 4}\bigg ]^{-1} {U}^{-1} \!\ \vec{e}_{+} \\ & \ = \frac{e^2 \omega _n...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.044007301330566406, 0.03604203835129738, -0.04739482328295708, -0.038636088371276855, 0.012909214943647385, -0.01239803433418274, -0.009483542293310165, 0.01005575992166996, 0.007145082578063011, 0.007370154373347759, -0.02026410959661007, 0.04596046730875969, -0.016327258199453354, 0.0...
4e00e92d2ca5a4f537d6638745b3498cee6a9a2d
subsection
87
93
calculation of optical conductivity
With use of M(k)=0 for k\gg 1/l , we obtain the following expression for m(i\omega _n),m(i\omega _n) = \frac{\pi }{2} \Big (\frac{K_1}{\sqrt{\omega ^2_n+\omega ^2_1}} + \frac{K_2}{\sqrt{\omega ^2_n+\omega ^2_2}}\Big ),with \omega ^2_1\equiv 4\pi M(0) u_1 K_1<4\pi M(0) u_2 K_2 \equiv \omega ^2_2. After the analytic cont...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.5517/cc6wfdw", "end": 296, "openalex_id": "https://openalex.org/W4397079776", "raw": ". X. T. Zhang, and R. Shindou, Phys. Rev. B 95, 205108 (2017).", "source_ref_id": "75ff70ee5b93b5387b0d7c6242daf16e95d3895d", "start": 0 ...
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.04721847549080849, 0.02515062876045704, -0.015467331744730473, -0.03891632705926895, -0.0065318383276462555, -0.024295996874570847, -0.035772498697042465, -0.00925598107278347, 0.04105290770530701, 0.01954973116517067, -0.03186560422182083, -0.002743219491094351, 0.015551269054412842, 0...
388bee1f72faf69930137fece30da4966b7b1749
subsection
88
93
calculation of optical conductivity
(REF ) is one and only one solution of g(\omega )=0 within 0<\omega <\omega _{1}. The renormalized gap \omega _{*} becomes progressively smaller, when the disorder strength increases. There exists a critical value of the disorder,g_{y,c} \equiv \frac{1}{\pi ^2 uK} \frac{8 \omega ^2_{g} \omega _1 \omega _2}{K_1 \omega _...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.05169452726840973, 0.029661795124411583, -0.028654759749770164, -0.06072733923792839, 0.023695867508649826, -0.024702904745936394, -0.0016173612093552947, 0.03271342068910599, 0.02567942440509796, 0.007068326696753502, -0.024886002764105797, -0.0015315343625843525, -0.014907188713550568, ...
86943d95d6880dda487a8bae0350af67f7c01c52
subsection
89
93
magnetism and spin nematicity in SNEI phases
SNEI phases introduced in the main text are characterized by particle-hole pairings between n=0 LL with \uparrow (\downarrow ) spin and n=-1 LL with \downarrow (\uparrow ) spins. The phases break the U(1) spin rotational symmetry around the field direction. Nonetheless, neither A-carbon site \pi -orbital electron spin ...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.011041407473385334, -0.005238373298197985, -0.05103312432765961, -0.01643620803952217, -0.0015184796648100019, 0.004181541968137026, -0.009255858138203621, 0.04453189671039581, -0.001874254085123539, 0.040838710963726044, -0.0002416738570900634, 0.020205698907375336, -0.02139606513082981,...
563a003558c5dc9897a7d6fe162d2bf8d82c6a14
subsection
90
93
magnetism and spin nematicity in SNEI phases
Such 2nd rank spin tensor has two components,Q^{AB}_{+-}({r}) &\equiv \langle S_{A,+}({r}) S_{B,-}({r}) \rangle , \\ Q^{AB}_{++}({r}) &\equiv \langle S_{A,+}({r}) S_{B,+}({r}) \rangle .In the SNEI-I phase, Q^{AB}_{+-}({r}) vanishes identically, while Q^{AB}_{++}({r}) exhibits both a ferro-type and a density-wave-type o...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.011566163040697575, 0.009056092239916325, -0.0261535681784153, -0.01782226748764515, -0.02044677920639515, 0.0019521715585142374, 0.009384156204760075, 0.0461120642721653, 0.004497528541833162, 0.0588989332318306, 0.01255798526108265, 0.02093506045639515, -0.0538024976849556, 0.01303863...
4a5bcda33e9d2505d7fa5b39dbd670c722353cf4
subsection
91
93
magnetism and spin nematicity in SNEI phases
(REF ,,REF ) and\langle \psi ^{\dagger }_{1,+,j}(z) \psi _{4,-,m}(z) \rangle &= \delta _{jm} i\sigma _{\overline{4}1,m} e^{i(\phi _{1}+\phi _4)+i(\theta _4-\theta _1)}, \\ \langle \psi ^{\dagger }_{1,-,j}(z) \psi _{4,+,m}(z) \rangle &= \delta _{jm} i\sigma _{4\overline{1},m} e^{-i(\phi _{1}+\phi _4)+i(\theta _4-\theta ...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
[ -0.03632400929927826, 0.015521645545959473, -0.041055288165807724, -0.018741967156529427, -0.013568085618317127, 0.003987246658653021, 0.013300997205078602, 0.03598824143409729, 0.00008584980969317257, 0.04151315242052078, 0.013606240972876549, 0.04194049537181854, 0.003746867412701249, 0....
6ff3c8a6c5b6478deecbc2af11b40d9ed658430e
subsection
92
93
magnetism and spin nematicity in SNEI phases
(REF ) and finite expectation values of the following two quantities in the SNEI phases;\langle \psi ^{\dagger }_{\uparrow }({r},A) \psi _{\downarrow }({r},B) \rangle &= \frac{\sqrt{2} i v}{\pi l^2} e^{-i\Theta _{-}} \cos \big ((k_{F,1}+k_{F,4})z + \Phi _{-}\big ), \\ \langle \psi ^{\dagger }_{\downarrow }({r},A) \psi ...
{ "cite_spans": [] }
10.1103/PhysRevB.98.205121
1802.10253
Theory of metal-insulator transitions in graphite under high magnetic field
[ "Zhiming Pan", "Xiao-Tian Zhang", "Ryuichi Shindou" ]
[ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.str-el" ]
2,018
en
Physics
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4192b88f1025402ccc3c7f9773a0a655aa39bbdc
abstract
0
13
Abstract
A matrix is called acyclic if replacing the diagonal entries with $0$, and the nonzero diagonal entries with $1$, yields the adjacency matrix of a forest. In this paper we show that null space and the rank of a acyclic matrix with $0$ in the diagonal is obtained from the null space and the rank of the adjacency matrix ...
{ "cite_spans": [] }
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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474c6be3b6f0ba29ba52ed2982118c8263ad07ee
subsection
1
13
Introduction
Throughout this article, all graphs are assumed to be finite, undirected and without loops or multiple edges. The vertices of a graph G are denoted by V(G) and its edges by E(G). We also assume that \mathbb {F} denotes an arbitrary field. Following the notation in , we denote by \mathcal {M}_{\mathbb {F}}(G) the set of...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1080/03081087.2015.1045822", "end": 521, "openalex_id": "https://openalex.org/W1527079481", "raw": "A. Mohammadian. Trees and acyclic matrices over arbitrary fields. Linear Multilinear Algebra, 64 (3): 466–476, 2015.", "source_ref_...
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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4f9d4604e7795eb73840f1e01809661d9d6e7ce9
subsection
2
13
Introduction
It was implicitly shown that \operatorname{{Null}}(A(F)) coincides with the intersection of all the maximum independent sets of F. In an optimal time algorithm for finding a sparsest (i.e., has the fewest nonzeros) \lbrace -1,0,1\rbrace basis for the null space of a forest has been found. It is important to notice that...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1137/0607059", "end": 509, "openalex_id": "https://openalex.org/W1967717294", "raw": "T. F. Coleman and A. Pothen. The null space problem. I. Complexity. SIAM J. Algebraic Discrete Methods, 7(4):527–537, 1986.", "source_ref_id": "1...
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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7bf97e6ae26f5ab6d5be86cfadc65c4347c5d011
subsection
3
13
On the null space
The null space of a graph is the direct sum of the null spaces of its connected components. In a similar fashion, the null space of a matrix M\in \mathcal {M}_{\mathbb {F}}(G) is the direct sum of the null spaces of M over the connected components of G. Because of this, we study the null space of matrices over trees an...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1080/03081087.2015.1045822", "end": 461, "openalex_id": "https://openalex.org/W1527079481", "raw": "A. Mohammadian. Trees and acyclic matrices over arbitrary fields. Linear Multilinear Algebra, 64 (3): 466–476, 2015.", "source_ref_...
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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695eb78fc7195561646452bae8ae664400b364ab
subsection
4
13
On the null space
The following statements are true.If u_1,u_2\in \operatorname{{Supp}}(M), D^{(M,v)}_{u_2,u_2}=D^{(M,v)}_{u_1,u_1}*M_{u,u_1}^{-1}*M_{u,u_2}, if u_1\in \operatorname{{Supp}}(M), u_2\notin \operatorname{{Supp}}(M), D^{(M,v)}_{u_2,u_2}=D^{(M,v)}_{u_1,u_1}*M_{u,u_1}^{-1}, if u_1\notin \operatorname{{Supp}}(M), u_2\in ...
{ "cite_spans": [] }
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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03aea947d2d54abfa55c2c3376690e7f53e307b2
subsection
5
13
On the null space
If \overrightarrow{x}_{w_1}\ne 0, then applying Lemma REF we get:(A(T)D\overrightarrow{x})_{u}&=D_{w_1,w_1}\overrightarrow{x}_{w_1}+ \sum _{{w\sim u,\\ w\ne w_1}}D_{w,w}\overrightarrow{x}_{w} \\ &=D_{w_1,w_1}\overrightarrow{x}_{w_1}+\sum _{{w\sim u,\\ w\ne w_1}}\overrightarrow{x}_{w}D_{w_1,w_1} \left(M_{u,w_1}^{-1}M_{u...
{ "cite_spans": [] }
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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75e2d2d8eb227dcfa9d9c7c6f79863251bc79dd3
subsection
6
13
On the null space
We have the following.Corollary 5 Given a forest F and a matrix M\in \mathcal {M}_{\mathbb {F},0}(F), a vector \overrightarrow{x} is in \operatorname{{Null}}(M) if and only if D^{(M,U)}\overrightarrow{x} is in \operatorname{{Null}}(A(F)) for every set U supp-transversal of M.Corollary 6 Let F be a forest, and M,N\in \...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1016/j.disc.2017.11.019", "end": 1520, "openalex_id": "https://openalex.org/W2963693461", "raw": "D. A. Jaume and G. Molina. Null decomposition of trees. Discrete Math., 341: 835-850, 2018.", "source_ref_id": "68f1a3c8200d4b503eb2b...
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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e7c0ae847e3ea8a0ee00564c965185b007ed7184
subsection
7
13
On the null space
Given a matrix M\in \mathcal {M}_{\mathbb {F},0}(F), and G an induced subgraph of F, we denote by M[G] the matrix obtained by deleting the rows and columns of vertices not in G. We do the same for vectors, \overrightarrow{x}[G] denotes the vector obtained from \overrightarrow{x} by deleting the coordinates correspoding...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1016/j.disc.2017.11.019", "end": 880, "openalex_id": "https://openalex.org/W2963693461", "raw": "D. A. Jaume and G. Molina. Null decomposition of trees. Discrete Math., 341: 835-850, 2018.", "source_ref_id": "68f1a3c8200d4b503eb2b1...
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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55ef62ae73d927584f39da31bffc5de3802a224d
subsection
8
13
On the null space
Hence a sparsest basis for the null space of M can be found in optimal time.[H]for finding a sparsest basis of the null space a acyclic matrix with 0 in the diagonal.INPUT: M, a tree-patterned matrix with 0 in the diagonal. Find F such that M\in \mathcal {M}_{\mathbb {F},0}(F). Apply the algorithms from to find a spa...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 386, "openalex_id": "", "raw": "D. A. Jaume, G. Molina, A. Pastine, and M. Safe. A \\lbrace -1,0,1\\rbrace - and sparsest basis for the null space of a forest in optimal time, 2017. Preprint available as arXiv:1710.01639.", ...
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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cc0e4fe031a8de44c7d967f8cfcdddfe4b802d95
subsection
9
13
On the rank
In the previous section we proved that given a forest F and M\in \mathcal {M}_{\mathbb {F},0}(F), \operatorname{{Null}}(M) is a non-singular diagonal multiplication of \operatorname{{Null}}(F). In this section show that \operatorname{{Rank}}(M) is a non-singular diagonal multiplication of \operatorname{{Rank}}(F). In o...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1145/253168.253189", "end": 941, "openalex_id": "https://openalex.org/W2157328170", "raw": "D. A. Jaume, G. Molina, and R. Sota. S-trees, 2017. Preprint available as arXiv:1709.03865.", "source_ref_id": "717ee9622a3c7ce2b5fa63f467a...
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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11b6c9d4589a45de39a5d92cd0650e41dde29a5c
subsection
10
13
On the rank
We define the v-normalization of M as the non-singular diagonal matrix withC^{(M,v)}_{w,w}=M_{v,\pi (v,w)}.We define the rank-normalization of M, R^M, as the product of C^{(M,v)} over all vertices v\notin \operatorname{{Supp}}(M).R^M=\prod _{v\notin \operatorname{{Supp}}(M)}C^{(M,v)}Let v\in T, then we say that v is a ...
{ "cite_spans": [] }
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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b4c39df454fb86e574d000ff324540b678036742
subsection
11
13
On the rank
ThereforeR^M\overrightarrow{s}_v(T)=&\prod _{{u\notin \operatorname{{Supp}}(M),\\ u\ne v}}M(u,\pi (u,v))\sum _{w\in \operatorname{{Supp}}(M)\cap N(v)}C^{(M,v)}\overrightarrow{e}_{w}\\ =&\prod _{{u\notin \operatorname{{Supp}}(M),\\ u\ne v}}M(u,\pi (u,v))\sum _{w\in \operatorname{{Supp}}(M)\cap N(v)}M(v,w)\overrightarrow...
{ "cite_spans": [] }
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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5c72b414fc2fe348227746cffd8e35c0fa58695b
subsection
12
13
Conclusion
There is a strong relation between the rank and the null space of a tree-patterned (acyclic) matrix with diagonal 0, and its underlying tree (forest). It would be interesting to study what happens when non-zero diagonal entries are allowed, or when a different graph is used. We conjecture that there will still be a str...
{ "cite_spans": [] }
1802.10142
On the structure of the fundamental subspaces of acyclic matrices with $0$ in the diagonal
[ "Daniel A. Jaume", "Adrián Pastine" ]
[ "math.CO" ]
2,018
en
Mathematics
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b413620d059f2fd3a3508d43472462ba267ac3cd
abstract
0
55
Abstract
Starting with two supercompact cardinals we produce a generic extension of the universe in which a principle that we call ${\rm GM}^+(\omega_3,\omega_1)$ holds. This principle implies ${\rm ISP}(\omega_2)$ and ${\rm ISP}(\omega_3)$, and hence the tree property at $\omega_2$ and $\omega_3$, the Singular Cardinal Hypothe...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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60475c60c468b9210556f16a28331ce010bc525f
subsection
1
55
Introduction
In C. Weiß  formulated some combinatorial principles that capture the essence of some large cardinal properties, but can hold at small cardinals. These principles usually have two parameters, a regular uncountable cardinal \kappa and a cardinal \lambda \ge \kappa . Among them there are, in increasing strength, the prin...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1016/j.apal.2011.12.017", "end": 146, "openalex_id": "https://openalex.org/W2127604217", "raw": "Christoph Weiß. The combinatorial essence of supercompactness. Ann. Pure Appl. Logic, 163(11):1710–1717, 2012.", "source_ref_id": "68c...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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f3fbc82f792f6fd52b8cc2549076523d409a81d8
subsection
2
55
Introduction
He started with a cardinal \kappa that is \kappa ^+-Mahlo, and built an involved forcing construction yielding a model in which I[\omega _2]\! \upharpoonright \!S_{\omega _2}^{\omega _1} is the non stationary ideal on S_{\omega _2}^{\omega _1}. One feature of this construction is that it uses \square _\kappa in the gro...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1215/00294527-2420666", "end": 2037, "openalex_id": "https://openalex.org/W2088750390", "raw": "Itay Neeman. Forcing with sequences of models of two types. Notre Dame J. Formal Logic, 55(2):265–298, 2014.", "source_ref_id": "ad2140...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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726d29d8a86c689f06fb3a832dae9c8adfdde637
subsection
3
55
Introduction
Using this type of models as side conditions allows us not only to generalize Neeman's iteration theory to semiproper forcing, but also to formulate and prove iteration theorems for large classes of forcing notions preserving two uncountable cardinals, such as \omega _1 and \omega _2. This theory is presented in and . ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 320, "openalex_id": "https://openalex.org/W2247405834", "raw": "Boban Veličković. Iteration of semiproper forcing revisited. Preprint, 2014, 2014.", "source_ref_id": "2f720fcc6628e606abc8a6a94c87ee6230bd844c", "start":...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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6f9bf2f631f152399eb8c7b7841fed9937472f1c
subsection
4
55
Preliminaries
Throughout this paper by a model M we mean a set or a class such that (M,\in ) satisfies a sufficient fragment of {\rm ZFC}. For a model M, we let \overline{M} denote its transitive collapse and we let \pi _M be the collapsing map. For a set X and an uncountable regular cardinal \kappa , we let \mathcal {P}_\kappa (X) ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1016/j.apal.2011.12.015", "end": 922, "openalex_id": "https://openalex.org/W2067542931", "raw": "Matteo Viale. Guessing models and generalized Laver diamond. Ann. Pure Appl. Logic, 163(11):1660–1678, 2012.", "source_ref_id": "21dec...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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e98e70164a89d5df28e3ffee610a5ffd78b5ee89
subsection
5
55
Preliminaries
Let us also mention that in Trang showed the consistency of {\rm GM}(\omega _3,\omega _2) assuming the existence of a supercompact cardinal. In his model the Continuum Hypothesis holds.We also recall the related notion of the \gamma -approximation property, introduced by Hamkins in .Our plan is to strengthen the princi...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1007/s11856-016-1390-x", "end": 141, "openalex_id": "https://openalex.org/W2963024593", "raw": "Nam Trang. PFA and guessing models. Israel Journal of Mathematics, 215(2):607–667, Sep 2016.", "source_ref_id": "ac39e331e644d95765c257...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.04343435913324356, -0.009408743120729923, -0.024906842038035393, -0.009568989276885986, 0.012934159487485886, -0.08058095723390579, 0.014315329492092133, 0.003557847812771797, 0.003279324620962143, 0.033453308045864105, -0.03644457086920738, 0.034552138298749924, -0.01689453050494194, 0...
dcfb8bc26cbfc2b45c007f19ebefe78f7751b29b
subsection
6
55
Preliminaries
The principle {\rm FS}(\kappa ^+,\gamma ) asserts that, for every X\in H_{\kappa ^+}, there is a collection \mathcal {G} of \gamma -guessing models of cardinality \kappa all containing X such that \lbrace M\cap \kappa ^+: M\in \mathcal {G} \rbrace is \kappa -closed and unbounded in \kappa ^+.0Proposition 1.0propositio...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.02443104051053524, -0.021485885605216026, -0.017792999744415283, 0.00414686743170023, -0.002983303042128682, -0.0722096711397171, 0.029543094336986542, 0.033205460757017136, 0.00840818416327238, -0.0025140622165054083, -0.013848325237631798, -0.003236998338252306, 0.008698121644556522, ...
fcb11c6f0aece21136347dad9352c4d302d1ad62
subsection
7
55
Preliminaries
We state it for any pair of uncountable regular cardinals \gamma \le \kappa .For a powerful model R and regular cardinals \gamma and \kappa , we let\mathfrak {G}^+_{\kappa ^{++},\gamma }(R) = \lbrace M\in {\mathcal {P}}_{\kappa ^{++}}(R): M\prec R \mbox{ and } M \mbox{ is strongly $\gamma $-guessing} \rbrace .Clearly {...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1163, "openalex_id": "", "raw": "William J. Mitchell. Adding closed unbounded subsets of \\omega _2 with finite forcing. Notre Dame J. Formal Logic, 46(3):357–371, 07 2005.", "source_ref_id": "4f0e6656181c2c482d16fc3efc50a3f...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.053179796785116196, 0.010549004189670086, -0.01523236557841301, 0.005720718298107386, 0.011243117973208427, -0.06816045194864273, 0.03279878571629524, 0.03398869186639786, 0.007810687180608511, 0.01835206337273121, -0.014973025768995285, 0.0213878583163023, -0.019328400492668152, -0.004...
1cc4112de4f84cdb1078d602731131d5dfc4d7d7
subsection
8
55
Preliminaries
Let \alpha be an ordinal, \dot{X} a \mathbb {P}-name, and suppose some condition p\in \mathbb {P} forces that \dot{X}\subseteq \alpha and \dot{X}\cap \check{Z}\in V, for all Z\in V with |Z|^V< \kappa . Fix a sufficiently large regular cardinal \theta . By the stationarity of \mathcal {S}, we can find M\prec H_{\theta }...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1007/bf02771565", "end": 1657, "openalex_id": "https://openalex.org/W2048739378", "raw": "M. Magidor. On the role of supercompact and extendible cardinals in logic. Israel Journal of Mathematics, 10(2):147–157, Jun 1971.", "source_...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.0014528831234201789, 0.015721283853054047, -0.03165625408291817, -0.01973555237054825, -0.008509335108101368, -0.04704174026846886, 0.0213382076472044, -0.0010770224034786224, 0.0362047404050827, -0.002693986753001809, -0.0014710084069520235, -0.02094135992228985, -0.031595200300216675, ...
f5c3b3f2c522dccf6b6399d26dc77f0a8d485ff1
subsection
9
55
Virtual Models
In this section we review the notion of virtual models introduced in and . In we used virtual models of two types: countable and internally club (I.C.) models of size \aleph _1. In the current situation we replace the I.C. models by models that have a much stronger closure property that we call Magidor models. We shall...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 75, "openalex_id": "https://openalex.org/W2247405834", "raw": "Boban Veličković. Iteration of semiproper forcing revisited. Preprint, 2014, 2014.", "source_ref_id": "2f720fcc6628e606abc8a6a94c87ee6230bd844c", "start": ...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.02500886283814907, -0.012039043940603733, -0.036315493285655975, 0.040221698582172394, -0.013526758179068565, -0.0412592850625515, 0.01348861213773489, 0.0308223944157362, 0.04977358877658844, 0.0015048804925754666, -0.04318187013268471, -0.009765511378645897, 0.023483002558350563, 0.00...
4107a99960b5dd90ede9ba56f44b0b0e96814997
subsection
10
55
Virtual Models
Since \alpha \le \beta , it follows that y^{\prime }\in A_\beta , a contradiction.The main reason we have defined the \rm Hull operation in this way is that it allows us to define the Skolem hull of M and X without referring explicitly to the ambient model A.For each \gamma \in A, let {\rm id}_\gamma be the identity fu...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.02283666655421257, 0.000669787812512368, -0.032126933336257935, 0.0039205229841172695, 0.005350674968212843, -0.0035906347911804914, -0.010815761983394623, -0.000883833912666887, 0.0500972680747509, 0.015941426157951355, -0.01627703569829464, -0.017085548490285873, 0.0012184894876554608, ...
1172d6eda56acb261526ea387cd7f2d2bcfc1289
subsection
11
55
Virtual Models
Being a member of F_\alpha will be expressed by a \Sigma _1-formula with parameter V_\alpha and similarly for R_\alpha and O_\alpha . If A is another suitable structure we can interpret these formulas in A and obtain families F_\alpha ^A, relations R_\alpha ^A and operations O_\alpha ^A. In this section we shall only ...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.01815526746213436, -0.013685104437172413, -0.03466282784938812, 0.045830607414245605, 0.014005491510033607, -0.04427444189786911, -0.007902881130576134, 0.030909722670912743, 0.052024755626916885, 0.02662263810634613, -0.036981821060180664, -0.0033278297632932663, 0.005419881083071232, ...
8da501f44fdcc3d3cea9a01d48ca2f5c941e8d94
subsection
12
55
Virtual Models
\alpha to be \pi M0, i.e. the image of M under the collapsing map of Hull(M,V).Note also that if A\in A_\alpha then V_\alpha ^A \subseteq V_\alpha . Therefore, if A,B\in A_\alpha , M \in V^{A}, and N \in V^B, we can still write M \cong _\alpha N if M \upharpoonright \alpha = N \upharpoonright \alpha . This is of course...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.007757647894322872, 0.0018535550916567445, -0.026466820389032364, 0.034312233328819275, 0.010920997709035873, -0.005769583862274885, -0.016911901533603668, 0.020666709169745445, 0.054215770214796066, 0.010188352316617966, -0.015645034611225128, -0.009905978105962276, -0.001988064264878630...
7e285936246602a3b57dbe7bdb32b1c2c70ac55e
subsection
13
55
Virtual Models
If \pi is the Mostowski collapse map of {\rm Hull}(N,V_\alpha ), then \pi (M^{\prime })\in N\upharpoonright \alpha . On the other hand, since | M | < \kappa <| V_\alpha |, we have that {\rm Hull}(M^{\prime },V_\alpha ) \subseteq {\rm Hull}(N,V_\alpha ) and \pi M' Proposition2.0propositiontheoremplain Let \alpha ,\be...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.04409173130989075, -0.0066099450923502445, -0.007327008061110973, 0.017438355833292007, -0.001578110153786838, -0.007555857766419649, -0.014562476426362991, 0.028636738657951355, 0.04885180667042732, 0.02474629320204258, -0.02126777544617653, -0.011541659012436867, 0.014470935799181461, ...
4454ffcdbd42430c0744526234bcfae5f5e76b80
subsection
14
55
Virtual Models
Then witnesses that M and N are -isomorphic.In our forcing we will use two types of virtual models, the countable ones and some nice models of size less than \kappa defined below.First note that since \lambda is of uncountable cofinality E is unbounded and thus club in \lambda . Suppose M is a countable elementary subm...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.026225462555885315, -0.03255679830908775, -0.029368245974183083, 0.006159703712910414, -0.01070224680006504, 0.00458831200376153, 0.006994982250034809, 0.0056295497342944145, 0.03122950717806816, 0.02974965237081051, -0.03209911286830902, -0.018536321818828583, 0.002235037973150611, 0.0...
7097c4b27b72eee584641b0ae346f990f79d4d95
subsection
15
55
Virtual Models
Then by alphasharpinE \gamma \in E_A. Since \gamma \in M, we have that E_A\cap (\gamma +1)\in M and therefore we can compute \alpha in M as the the next element of E_A\cap (\gamma +1) above \beta . Thus, in this case we have \alpha \in M.It will be convenient to also have the following definition.Note that a(M) is a cl...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.01546553149819374, -0.018204616382718086, -0.01797572337090969, -0.008575854822993279, -0.00725590530782938, 0.00008970933413365856, -0.012581480666995049, 0.029634002596139908, 0.026856768876314163, 0.0033551885280758142, -0.020340951159596443, 0.025315556675195694, 0.00082592194667086, ...
fbbc4d13dec5d6118b9b32afb5bc12af74403807
subsection
16
55
Virtual Models
If we let \pi _\gamma be the collapsing map of {\rm Hull}(M,V_\gamma ) to A_\gamma , we then have that, for every \gamma < \delta , the following diagram commutes:\begin{} {\rm Hull}(M,V_\gamma ) {r}{{\rm id}} [swap]{d}{\pi _\gamma } & {\rm Hull}(M,V_\delta ) {d}{\pi _\delta } \\ A_\gamma {r}{\sigma _{\gamma ,\delta }}...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.04986220970749855, -0.025953371077775955, -0.01859915442764759, 0.03701521456241608, 0.003682830836623907, 0.009528442285954952, -0.030820582062005997, 0.017439566552639008, 0.04714633524417877, 0.02543460950255394, -0.009658132679760456, -0.006915559060871601, 0.0274944007396698, 0.012...
4332f0906222069dd9b35b3c6723bce5b35fac4f
subsection
17
55
Virtual Models
Set\eta = \sup (\sup (\pi ^{-1}NM0ORD)E(+1)).We define the meet ofand M to be NM=-1[NM].To make sense of the above definition, we need to prove the following.0Proposition 2.0propositiontheoremplain Under the assumptions of the above definition, N\wedge M\in C_\eta .Since \eta (N)\ge \alpha we can form the model A={\rm...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.008203250356018543, -0.008020107634365559, -0.04618239030241966, 0.04270268604159355, 0.012598666362464428, -0.016818569973111153, -0.029394343495368958, 0.039772409945726395, 0.032904572784900665, -0.006093298085033894, -0.014582708477973938, 0.004731176886707544, -0.0011370086576789618, ...
da218c98edecfa607d6745eedb4aa7d21fca3fd1
subsection
18
55
Virtual Models
Now, \overline{N} is also the transitive collapse of N\upharpoonright \alpha . In fact, if \sigma is the \alpha -isomorphism between N and N\upharpoonright \alpha , and \pi and \pi ^{\prime } are the collapsing maps of N and N^{\prime } respectively, then \pi = \pi ^{\prime } \circ \sigma . Therefore, \sigma \upharpoon...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.010897142812609673, -0.021656926721334457, -0.03375977650284767, 0.036720626056194305, 0.03653747960925102, -0.006368113216012716, -0.022648964077234268, 0.02986793965101242, 0.040078286081552505, 0.03400396928191185, -0.022999992594122887, -0.006787821184843779, -0.009683805517852306, ...
8fd429e4f269c5f0afa24ade649f2a006c0da517
subsection
19
55
Virtual Models
Since \sigma (P^{\prime })\in M, by the transitivity of \cong _\alpha we get that P is \alpha -isomorphic to \sigma (P^{\prime }). This implies that P\in _\alpha M.Now assume P\in _\alpha N and P\in _\alpha M. By active-Magidor we know that \alpha \in N. Since P is an \alpha -model, we conclude that P\in N. If also \al...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.03240864723920822, -0.03228658065199852, -0.045835960656404495, -0.012794092297554016, -0.006744172424077988, -0.009818721562623978, -0.030287742614746094, 0.02069026604294777, 0.034270159900188446, 0.04232654720544815, -0.010368021205067635, -0.025191467255353928, -0.021010691300034523, ...
2d067d0577e5556c718d2d533026128664c73aa0
subsection
20
55
Virtual Models
Suppose j > i+1. If M_j is a Magidor model or if there are no Magidor models between M_i and M_j by intermediate we conclude that M_i\in _\alpha M_j. Otherwise let k < j be the largest such that M_k is a Magidor model. Then again by intermediate, we conclude that M_i\in _\alpha M_k\in _\alpha M_j.Let \alpha \in E and l...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.029969310387969017, -0.03259391337633133, -0.05609327182173729, 0.00005972594226477668, -0.013718130998313427, 0.007080325856804848, -0.05929772928357124, 0.019089413806796074, 0.005111873149871826, 0.034608144313097, -0.029358936473727226, -0.011490270495414734, -0.04431307315826416, 0....
3830653ef83e5196e48caba4e5d192ff78753ce5
subsection
21
55
Main Forcing
We fix an inaccessible cardinal \kappa and a cardinal \lambda > \kappa with {\rm cof}(\lambda )\ge \kappa such that (V_\lambda ,\in ,\kappa ) is suitable. We start by defining the forcing notions \mathbb {M}^\kappa _\alpha , for all \alpha \in E\cup \lbrace \lambda \rbrace .If \kappa < \lambda are supercompact cardinal...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1215/00294527-2420666", "end": 2232, "openalex_id": "https://openalex.org/W2088750390", "raw": "Itay Neeman. Forcing with sequences of models of two types. Notre Dame J. Formal Logic, 55(2):265–298, 2014.", "source_ref_id": "ad2140...
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.009133167564868927, -0.013375474140048027, -0.010071663185954094, -0.00959097035229206, 0.015611078590154648, -0.05124340206384659, 0.010353974997997284, 0.023012224584817886, 0.005176987498998642, 0.012940561398863792, -0.033511169254779816, 0.012963451445102692, 0.006397795397788286, ...
3db2b437d43ae45424e800b9d5b21a29b7a0ada5
subsection
22
55
Main Forcing
In a stronger condition this finite set is allowed to increase. The main point is that d_p(M) controls what models can be added \in -above M in stronger conditions. In our situation there are some complications. First, we have not one chain, but a \delta -chain, for each \delta \in E. It is therefore reasonable to have...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.019284969195723534, -0.025799749419093132, -0.026074375957250595, -0.007796376012265682, -0.01743886061012745, -0.01592840813100338, 0.011099536903202534, 0.09270211309194565, 0.006678793579339981, 0.014410327188670635, -0.0326501838862896, 0.025281008332967758, -0.010237511247396469, 0...
272cfd36c9257361f1607be48c1ee7ffecc19119
subsection
23
55
Main Forcing
The ordering on \mathbb {P}^\kappa _\lambda is clearly transitive. We will say that q is stronger than p if q forces that p belongs to the generic filter, in order words, any r\le q is compatible with p. We write p\sim q if each of p and q is stronger than the other. We identify equivalent conditions, often without say...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.011956519447267056, -0.0033534718677401543, -0.010560194030404091, -0.020097941160202026, 0.008438998833298683, -0.03497682511806488, -0.0029872225131839514, 0.04877222329378128, 0.03561776131391525, 0.04779556021094322, -0.008805247955024242, -0.014619458466768265, -0.011201130226254463,...
0eeb3937595ab3295fff7a73f6f4d594a4686a87
subsection
24
55
Main Forcing
Note that \mathcal {M}_r is closed under meets. We define d_r by letting d_r(M)=d_q(M) if M\in {\rm dom}(d_q), and d_r(M)= d_p(M) if M\in {\rm dom}(d_p) with \eta (M) > \alpha . It is straightforward that r is as required. [] Our goal is to prove that our poset \mathbb {P}^\kappa _\lambda is strongly proper for an appr...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.004099914338439703, -0.032921358942985535, -0.04433247074484825, 0.0019679588731378317, -0.034385886043310165, -0.001958424225449562, -0.00026005852851085365, 0.018764259293675423, 0.025873320177197456, 0.03963377699255943, -0.03353158012032509, -0.004870316945016384, -0.003701364621520042...
9b74cd75fe60bac4e2b7a5ec12a4e67289e1e45a
subsection
25
55
Main Forcing
Indeed, if there is P\in \mathcal {M}_{p^M} such that N\in _{\bar{\delta }} P and P is not strongly active at \bar{\delta }, then P\in M, and hence \eta (P)\ge \delta . Moreover, P is active but not strongly active at \delta as well. Since N\in _{\bar{\delta }}P and N,P\in M it follows that N\in _{\gamma } P, for unbou...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.00472248112782836, -0.007385075092315674, -0.04522595554590225, -0.014899847097694874, -0.019393451511859894, -0.030806750059127808, 0.027449896559119225, 0.06384123116731644, 0.038634318858385086, 0.040617913007736206, -0.01887466572225094, -0.0016831944230943918, -0.004829289857298136, ...
11661702e7711d1a234a141f511933645198493d
subsection
26
55
Main Forcing
It is straightforward to check that every N\in {\rm dom}(d_{p\upharpoonright M}) is \mathcal {M}_{p\upharpoonright M}-free, and (*) from PF holds. Finally, the fact that p\le p\upharpoonright M follows from the definition. Let d_r = d_q \cup d_p \! \upharpoonright \!({\rm dom}(d_p)\setminus M). Let us check that every ...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.002979994984343648, -0.0130951888859272, -0.021077454090118408, -0.022023726254701614, -0.01092792022973299, -0.026831401512026787, 0.041056010872125626, 0.06217925250530243, 0.035500477999448776, 0.031990110874176025, -0.0342794805765152, 0.001219088793732226, -0.0016321290750056505, -0...
e32a6c5877ce5aed557b3832fee1efae8982d0a7
subsection
27
55
Main Forcing
Then, for any Magidor model N\in (P,M)_p^\delta , we have P\in _\delta N by intermediate. Then by meetactiveness we have that P\in _\delta N\wedge M. Conversely, suppose P is in (\emptyset ,M)^\delta _{p}, but not in (\mathcal {M}_p\upharpoonright M)^\delta . Then, by intermediate again, there must be a Magidor model N...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.008115740492939949, -0.019770676270127296, -0.05635252967476845, -0.03664287552237511, -0.026132075116038322, -0.004767234902828932, 0.0004393006965983659, 0.037619203329086304, 0.0009491564705967903, 0.03536144271492958, -0.02906106412410736, -0.033073168247938156, -0.016490818932652473, ...
a2a410bb49268617e02075938604d11825beeb12
subsection
28
55
Main Forcing
\upharpoonright \!M)^\delta is a Magidor model, and the interval [M,V_\lambda )_p^\delta . Consider one such interval, say [N\wedge M,N)_p^\delta . If P is the last model of \mathcal {M} before N then P\in _\delta M by the assumption that \mathcal {M}\in _\delta M, and P\in _\delta N by intermediate. Hence by MPI we ha...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.0034044370986521244, -0.02290222980082035, -0.061092957854270935, -0.040982939302921295, -0.049222249537706375, 0.02056775987148285, -0.012435254640877247, 0.038114435970783234, 0.02647259831428528, 0.01791287027299404, -0.009124272502958775, -0.0009812789503484964, -0.01258783508092165, ...
2c294f37fe6aba19149a3eecfa0385506bced57f
subsection
29
55
Main Forcing
Now, let \lbrace P_i : i < k\rbrace list all countable models on the chain [N\wedge M,N)_p^\delta below the first Magidor model, if it exists. Then P_0= N\wedge M and P= P_j, for some j. Note that Q\in _\delta P_i, for all i<k, again by intermediate. Now let S be the \in _\delta ^*-predecessor of N on the \delta -chain...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.024780020117759705, -0.008865265175700188, -0.050689179450273514, -0.006645134650170803, -0.014793244190514088, 0.00924673117697239, -0.009101774543523788, 0.048644520342350006, 0.009879964403808117, 0.02629062347114086, -0.011916992254555225, -0.02104165405035019, -0.01858501508831978, ...
e9f364aa392917f24407d59e36c433b3ac3598da
subsection
30
55
Main Forcing
We will let V^M_\alpha = V^A_\alpha \cap M, and (\mathbb {P}^\kappa _\alpha )^M= (\mathbb {P}^ \kappa _\alpha )^A\cap M, if \alpha \in E_A\cap M. Suppose N\in \mathcal {M}_p and N\in _\delta M, for some \delta \in a(M)\cap a(N), Then by full-countable, N\in _\alpha M, where \alpha = \alpha (M,N). Note that if M is a st...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.016667023301124573, -0.028419410809874535, -0.03183828666806221, -0.02838888391852379, -0.029029924422502518, 0.008516665548086166, 0.006421840284019709, 0.053786251693964005, 0.03895077109336853, 0.009462960995733738, -0.04041600227355957, 0.00761615764349699, 0.010058212094008923, 0.0...
7bac208128d7b18c2287e4d6afa8b4e905522220
subsection
31
55
Main Forcing
Note that if P\in \mathcal {M}_{p\upharpoonright M} is a \delta -model that is active at \gamma then a(P) is cofinal in \delta . Moreover, a(P)\in M and since \bar{\delta }= \sup (M\cap \delta ) we have that \bar{\delta }\in a(P). This implies that \mathcal {M}_{p\upharpoonright M}^\gamma \! \upharpoonright \!\bar{\del...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.004504027310758829, -0.01842799223959446, -0.0434461273252964, -0.021006081253290176, -0.026574142277240753, -0.027153830975294113, 0.008908897638320923, 0.043873269110918045, 0.03600170835852623, 0.03231000900268555, -0.02935054525732994, 0.0009391335188411176, 0.006818967405706644, -0...
167a507077660089270070442b8f7f614724b4c3
subsection
32
55
Main Forcing
Since \eta = \sup (M\cap \eta ^*) and N\in M we must have that N is strongly active at \eta ^* as well. This also establishes (*) from PF. Indeed, if P^*\in _{\eta ^*} N then P\in _\eta N\! \upharpoonright \!\eta , and hence d_p(P)\subseteq N, since N\! \upharpoonright \!\eta \in \mathcal {L}(\mathcal {M}_p), and p is ...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.021633541211485863, -0.010824398137629032, -0.04073452204465866, -0.03429633378982544, -0.020779183134436607, -0.027583526447415352, 0.014981760643422604, 0.051047831773757935, 0.023952510207891464, 0.019680725410580635, -0.005885147023946047, 0.023296484723687172, -0.02741570770740509, ...
f1eb6e6af578e7767899252a847ac2c168fe4c6b
subsection
33
55
Main Forcing
By the assumption, P\notin _\eta M, hence by gapmeet, there must be a Magidor model N\in (\mathcal {M}_p\! \upharpoonright \!M)^\eta such that P is in the interval [N\wedge M\! \upharpoonright \!\eta ,N)_p^\eta . By intermediate, we have that P\in _\eta N and thus d_q(P)\in N. Note that P also belongs to the interval [...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.013056998141109943, 0.0034225971903651953, -0.03470673784613609, -0.011683381162583828, -0.04810713976621628, -0.003991122357547283, -0.020100604742765427, 0.0346456877887249, 0.007135180290788412, 0.023595698177814484, -0.008752997033298016, 0.0005890339380130172, -0.02383989654481411, ...
a2108485a2c8f5ba18cd9ed7462b13990b991b58
subsection
34
55
Main Forcing
Now, suppose P\in {\rm dom}(d_q). Let \delta (P) be the largest ordinal \gamma \in E\cap (\eta (P)+1) such that M is strongly active at \gamma . Let D_q= \lbrace P\! \upharpoonright \!\delta (P) : P\in {\rm dom}(d_q)\rbrace . Note that, for every P\in {\rm dom}(d_q), we have (P \! \upharpoonright \!\delta (P))\! \uph...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.0032801649067550898, 0.0036692076828330755, -0.029674049466848373, -0.021191392093896866, -0.03246600553393364, -0.012281548231840134, 0.02074895054101944, 0.043572794646024704, 0.01690429262816906, 0.030192773789167404, -0.02126767486333847, 0.006041605956852436, -0.012609564699232578, ...
55eeee35a12a53109b9ce87fe433d6e3d8041294
subsection
35
55
Main Forcing
\upharpoonright \!M)\in R\! \upharpoonright \!M. Since (R\! \upharpoonright \!M) \cap V_\kappa = R\cap V_\kappa , we get that d_q(P\! \upharpoonright \!M)\in R, and hence d_r(P)\in R. Moreover, since R\! \upharpoonright \!M is strongly active at \rho , it follows that R is strongly active at \eta . This shows that all ...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.012879256159067154, -0.015236892737448215, -0.02089064195752144, -0.032533854246139526, 0.007431514095515013, -0.018082842230796814, 0.016297446563839912, 0.06757031381130219, 0.0011292238486930728, 0.039980631321668625, -0.02607896737754345, 0.00001084875111700967, -0.003029066836461425,...
0caab9c471825501ec30551566a458a703cdc1d0
subsection
36
55
Main Forcing
By intermediate, we have that \in _\alpha is transitive on U_\alpha . Note that if P,Q \in U_\alpha then P\cap V_\alpha \subseteq Q\cap V_\alpha . Now, a standard density argument using the stationarity of U shows that, for every x\in V_\alpha , there is P\in U_\alpha such that x\in P. It follows that \lbrace P\cap V_\...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.014004146680235863, -0.012096225284039974, -0.05281127989292145, -0.004208875820040703, -0.00045146202319301665, -0.03180887550115585, -0.01781235821545124, 0.02918357402086258, 0.003336955327540636, 0.002495561959221959, -0.017201824113726616, -0.00019985482504125684, 0.00271497294306755...
e0de2448e149b52b2af412738ffbc7ab6c079cb9
subsection
37
55
Main Forcing
Case 1. Suppose M is strongly active at \alpha . Since P is \mathcal {M}_p-free and we may assume that P\in {\rm dom}(d_p), by defining d_p(P)=\emptyset if necessary. Since \gamma < \kappa _M, we can find \delta \in M such that \gamma \le \delta < \kappa _M. Define a condition q as follows. Let \mathcal {M}_q=\mathcal ...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.005174218211323023, -0.002058621495962143, -0.05204744637012482, -0.014484758488833904, -0.017369499430060387, -0.007498037535697222, 0.01582791842520237, 0.04930007457733154, 0.039104267954826355, 0.020925819873809814, -0.009615804068744183, -0.0050521125085651875, -0.01098948996514082, ...
b11edbcb34dacbf43b968834a942f5ecf64dfdbc
subsection
38
55
Main Forcing
\upharpoonright \!\alpha : Q^*\in \mathcal {M}^*\rbrace . Then \mathcal {M}\in _\alpha M, is an \alpha -chain closed under meets that are active at \alpha , and (\mathcal {M}_q\! \upharpoonright \!M)^\alpha \subseteq \mathcal {M}. We now define a condition r. Let \mathcal {M}_r be the closure of \mathcal {M}_p and \mat...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.011351319961249828, -0.005893074441701174, -0.028103670105338097, -0.012899920344352722, 0.007212817668914795, -0.019895324483513832, 0.0180339515209198, 0.03493887558579445, 0.010618976317346096, 0.029339499771595, -0.03335212916135788, 0.026089727878570557, -0.0022675939835608006, 0.03...
92b63500ffe728f513f35182fabcfcd472df7b60
subsection
39
55
Main Forcing
Let us fix a V-generic filter G_\alpha over \mathbb {P}^\kappa _\alpha , and let \mathbb {Q}_\alpha denote the quotient forcing. Recall that \mathbb {Q}_\alpha consists of all p\in \mathbb {P}^\kappa _\lambda such that p\! \upharpoonright \!\alpha \in G_\alpha , with the induced ordering. Forcing with this poset over V...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.005829531233757734, -0.010339024476706982, -0.050634514540433884, -0.011659062467515469, 0.03305435553193092, -0.05252682417631149, -0.011720104143023491, 0.039097536355257034, 0.05255734547972679, -0.01372686680406332, -0.02557668648660183, -0.006565853022038937, 0.015855714678764343, ...
af6c1ce94693cd8fcf45d8243a81e51cb443fcc9
subsection
40
55
Main Forcing
Since \dot{F}\in M^*, it follows that p^{M^{\prime }} forces that M is closed under \dot{F}. It also forces that M^{\prime } belongs to \dot{\mathcal {M}}_{\alpha }, hence it forces that M belongs to \dot{C}^\alpha _{\rm st}. Work in V[G_\alpha ]. Let p\in \mathbb {Q}_\alpha , and M\in C^\alpha _{\rm st} be such that p...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.024085847660899162, -0.02309371717274189, -0.04630954563617706, -0.05894774571061134, 0.017110414803028107, -0.030466001480817795, 0.008455994538962841, 0.025291666388511658, 0.04197470098733902, -0.000696875446010381, -0.04231049865484238, 0.007669922895729542, -0.006307653151452541, -0...
60cc6c71f41e7b9693811b3f53303388e0ee49da
subsection
41
55
Main Forcing
It follows that q and r are compatible in \mathbb {Q}_\alpha . Now, by C-stationary, quotient-alpha-sp, and guessingbystronglyproper, we get the following. 0Corollary 4.0corollarytheoremplain The pair (V G Corollary4.0corollarytheoremplain The pair (VG0,V[G]) has the 1-approximation property. [] Suppose now N\in U....
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.018752770498394966, 0.009147506207227707, -0.036376405507326126, -0.0018787102308124304, 0.01600622944533825, -0.04675222560763359, -0.01940888725221157, -0.001975983614102006, 0.043029140681028366, 0.024795159697532654, 0.0012311750324442983, -0.017013294622302055, 0.005138319917023182, ...
9d591fe0aba73b55cb089e58c463fc9a0502cdeb
subsection
42
55
Main Forcing
Now, p^{N\wedge M} is (N\wedge M, \mathbb {P}_N)-strongly generic, hence also (N\cap M, \mathbb {P}_N)-strongly generic, and therefore it is (M^*,\mathbb {P}_N)-generic. It follows that p^{N\wedge M} forces that M\in {\dot{C}}^N_{\rm st} and is closed under \dot{F}. Let \mathbb {Q}_N denotes the quotient forcing (\math...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.00801882054656744, 0.006466174963861704, -0.025300102308392525, -0.061586979776620865, 0.009155645966529846, -0.06286877393722534, -0.004615971818566322, 0.017639879137277603, 0.02746693789958954, 0.00891912542283535, -0.026337742805480957, 0.014557477086782455, -0.013268057256937027, 0....
801cf9bc3c1e6bc08a6d92bcb2b01a187290b6cb
subsection
43
55
Main Forcing
\upharpoonright \!N \in G_N. It follows that r and q are compatible in \mathbb {Q}_N. Suppose G is a V-generic filter over \mathbb {P}^\kappa _\lambda . As before, for \alpha \in E, let G_\alpha = G\cap \mathbb {P}^\kappa _\alpha . 0Lemma 4.0lemmatheoremplain Let \alpha \in E. Suppose N\in \mathcal {M}_G is a Magidor ...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.027856415137648582, -0.01105255912989378, -0.014385870657861233, -0.0026124923024326563, 0.041616812348365784, -0.03783346712589264, -0.012021278962492943, 0.010991537012159824, 0.004164732526987791, 0.04744438827037811, -0.019313374534249306, -0.020167678594589233, -0.002622026950120926,...
f010886c56ad6108608153bafa01e8937feb7bff
subsection
44
55
Main Forcing
0Theorem 4.0theoremtheoremplain The principle {\rm GM}(\omega _2,\omega _1) holds in V G Theorem4.0theoremtheoremplain The principle {\rm GM}(\omega _2,\omega _1) holds in VG0. [] 0Theorem 4.0theoremtheoremplain The principle {\rm FS}(\omega _2,\omega _1) holds in V G Theorem4.0theoremtheoremplain The principle ...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.03634020686149597, -0.012891466729342937, -0.034967150539159775, 0.007502223365008831, 0.016324106603860855, -0.06377080827951431, 0.003562316531315446, 0.017147939652204514, 0.013822093605995178, 0.009855488315224648, -0.047416187822818756, -0.01765139400959015, -0.001491290982812643, ...
4976d14b99aa239871f7f48ae120ba668f509a75
subsection
45
55
Main Forcing
Note that {\rm cof}(\bar{\lambda })\ge \kappa , and hence the transitive collapse \overline{N[G]} of N[G] equals V_{\bar{\gamma }}[G_{\bar{\lambda }}]. On the other hand, by approx-alpha, the pair (V[G_{\bar{\lambda }}],V) has the \omega _1-approximation property. Moreover, by quotient-alpha-sp, {\mathcal {P}}_{\omega ...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.03305891528725624, -0.0077877710573375225, -0.020787738263607025, 0.004952732473611832, 0.03192947804927826, -0.030983194708824158, -0.020879315212368965, 0.03461570665240288, 0.012385645881295204, 0.011111214756965637, -0.0362945981323719, -0.01414085179567337, -0.013492189347743988, 0...
a140b4bf27cfae29fbfe3fbfa0cbf43099d954ea
subsection
46
55
Main Forcing
Let G be V-generic over \mathbb {P}^\kappa _\lambda . Then in VG0 the principle GM+(3,1) holds. []
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.03356913477182388, 0.0024776312056928873, 0.0025253144558519125, -0.004272435326129198, 0.001819599769078195, -0.0787348821759224, 0.0007963132811710238, 0.025665130466222763, -0.008834785781800747, 0.008758492767810822, -0.017440691590309143, -0.0022163258399814367, -0.003093701088801026...
b9d233b8a6601aeb0c576e5438a0be312a3eaa2f
subsection
47
55
Guessing Models in
We assume \kappa is supercompact and \lambda is inaccessible and analyze \omega _1-guessing models in the the generic extension by \mathbb {P}^\kappa _\lambda . Suppose \alpha \in E. We have already established in alpha-complete-suborder that \mathbb {P}^\kappa _\alpha is a complete suborder of \mathbb {P}^\kappa _\la...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ -0.021331805735826492, -0.0007843978237360716, -0.03512576222419739, -0.0034637481439858675, 0.039703406393527985, -0.06121831759810448, 0.006782537791877985, 0.017227187752723694, 0.04943852126598358, 0.007320410571992397, -0.03317263722419739, -0.02340700291097164, 0.018981950357556343, ...
a7289da2c7015c88813cf81694a6599d50807470
subsection
48
55
Guessing Models in
Note that \sigma (q)=q, for all q\in M\cap \mathbb {P}^\kappa _\alpha . Hence, M \cap \mathbb {P}^\kappa _\alpha = M^{\prime } \cap \mathbb {P}^\kappa _\alpha . Therefore, p^{M^{\prime }} is also (M,\mathbb {P}^\kappa _\alpha )-strongly generic, and thus it is (M^*,\mathbb {P}^\kappa _\alpha )-generic. Since \dot{F}\in...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
[ 0.025201771408319473, -0.017818201333284378, -0.02591877244412899, -0.06462149322032928, 0.02250158227980137, -0.03157849237322807, 0.0017705694772303104, 0.022135455161333084, 0.047962695360183716, 0.005152481142431498, -0.023950837552547455, 0.016002820804715157, -0.013508576899766922, 0...
6f95f98e23e8aeb0e68952699d148cd778a53970
subsection
49
55
Guessing Models in
\upharpoonright \!\alpha \wedge q\! \upharpoonright \!\alpha =(r\wedge q)\! \upharpoonright \!\alpha . Since r\! \upharpoonright \!\alpha , q\! \upharpoonright \!\alpha \in G_\alpha , we conclude that r\! \upharpoonright \!\alpha \wedge q\! \upharpoonright \!\alpha \in \mathbb {Q}_\alpha . It follows that q and r are c...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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d21ba00a496331aaf61a685ecc172c05fcdb43c5
subsection
50
55
Guessing Models in
Let M=M^*\cap V_\lambda , and note that M \in C_{\rm st}. Since N\in _{\eta (N)}M, the meet N\wedge M is defined. Let \eta = \eta (N\wedge M) and let \sigma be the \eta -isomorphism between N\cap M and N\wedge M. Note that \sigma (q)=q, for all q\in \mathbb {P}_N. Now, p^{N\wedge M} is (N\wedge M, \mathbb {P}_N)-strong...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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c94004f2e1029fd33ee0a335df508487ade2873b
subsection
51
55
Guessing Models in
\upharpoonright \!N exists, and r\! \upharpoonright \!N \wedge q\! \upharpoonright \!N = (r\wedge q)\! \upharpoonright \!N. Since r\! \upharpoonright \!N, q\! \upharpoonright \!N \in G_N, we have that r\! \upharpoonright \!N \wedge q\! \upharpoonright \!N \in G_N. It follows that r and q are compatible in \mathbb {Q}_N...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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d7f9b619a13afd079de39f14a8ba628de39f4b9f
subsection
52
55
Guessing Models in
Thus, N[G_N] remains an \omega _1-guessing model in V[G].A similar argument shows the following.0Lemma 4.0lemmatheoremplain Suppose \mu > \lambda and N\prec V_\mu is a \kappa -Magidor model containing all the relevant parameters. Then N G Lemma4.0lemmatheoremplain Suppose \mu > \lambda and N\prec V_\mu is a \kappa -...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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27cbce265f6be1acf57fee4e9728570e65eed041
subsection
53
55
Guessing Models in
In fact, we show that for all \mu >\lambda the set of strong \omega _1-guessing models is stationary in {\mathcal {P}}_{\omega _3}(V_\mu [G]).0Lemma 4.0lemmatheoremplain Suppose \mu > \lambda and N\prec V_\mu is a \lambda -Magidor model containing all the relevant parameters. Then N G Lemma4.0lemmatheoremplain Suppo...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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02af97272a14c2aabf1f3c00dc8e2433f9d3f6ea
subsection
54
55
Guessing Models in
Moreover, if M\in \mathcal {M}_G^\delta is a limit of such Magidor models then by continuity-Magidor,M\cap V_{\bar{\gamma }} = \bigcup \lbrace Q\cap V_\delta : Q\in _\delta M \mbox{ and } Q\in \mathcal {M}_G^\delta \rbrace .Hence if we let \mathcal {G} be the collection of the models (M\cap V_{\bar{\gamma }})[G_{\bar{\...
{ "cite_spans": [] }
1802.10125
Guessing models and the approachability ideal
[ "Rahman Mohammadpour", "Boban Velickovic" ]
[ "math.LO" ]
2,018
en
Mathematics
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9b36b2eb27c5bb92674a17ed8926369ed12dc3e9
abstract
0
62
Abstract
We study the derivative nonlinear wave equation \( - \partial_{tt} u + \Delta u = |\nabla u|^2 \) on \( \mathbb{R}^{1+3} \). The deterministic theory is determined by the Lorentz-critical regularity \( s_L = 2 \), and both local well-posedness above \( s_L \) as well as ill-posedness below \( s_L \) are known. In this ...
{ "cite_spans": [] }
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
[ -0.06793444603681564, 0.048585642129182816, -0.022278591990470886, -0.02203444205224514, 0.007187134586274624, 0.021103624254465103, 0.050172608345746994, 0.016769981011748314, -0.007145171519368887, 0.028580686077475548, -0.013527377508580685, 0.0426345095038414, -0.018936803564429283, -0...
23cae391124fe26e692ef812fc6a079a36fe7d18
subsection
1
62
Introduction
We consider the Cauchy problem for the nonlinear wave equation{\left\lbrace \begin{array}{ll} -\partial _{tt} u + \Delta u = |\nabla u|^2 \qquad \qquad \text{for} ~ (t,x)\in \mathbb {R}^{1+d} \\ u|_{t=0}=f_0 , ~ \partial _t u|_{t=0}=f_1 \end{array}\right.}~,with initial data (f_0,f_1)\in H_x^{s}(\mathbb {R}^d)\times H_...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.48550/arxiv.1208.4706", "end": 951, "openalex_id": "https://openalex.org/W4302317592", "raw": "Jalal Shatah and Michael Struwe. Geometric wave equations, volume 2 of Courant Lecture Notes in Mathematics. New York University, Courant Inst...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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9a27f594cf69cf32ab32a79019c75079a9234929
subsection
2
62
Introduction
Let (\Omega , {F}, \mathbb {P} ) be a probability space and let \lbrace g_k(\omega ) \colon k \in \mathbb {Z}^d \rbrace be a family of independent standard complex Gaussians. Then, we define\widehat{f^\omega }(\xi ) = \sum _{k\in \mathbb {Z}^d} g_k(\omega ) \varphi (\xi -k) \widehat{f}(\xi )~.Thus, f^\omega is a rando...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 849, "openalex_id": "https://openalex.org/W2803371764", "raw": "Sagun Chanillo, Magdalena Czubak, Dana Mendelson, Andrea Nahmod, and Gigliola Staffilani. Almost sure boundedness of iterates for derivative nonlinear wave equations,...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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a768c148b04c0ffed1b9b82a71fe2841f33a3b5b
subsection
3
62
Introduction
In addition, let 0 < T_0 \ll 1 and \sigma =1.1 . Then, there exists a random function u and random times 0 < T(\omega ) \le T_0 such that\begin{aligned}u&\in \big ( L_\omega ^2 C_t^0 H_x^s L_\omega ^2 L_t^2 W_{x}^{\sigma ,\infty } \big )(\Omega \times [0,T_0] \times )~,\\ \partial _t u &\in \big ( L_\omega ^2 C_t^0 H_x...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 849, "openalex_id": "", "raw": "J. Bourgain. Fourier transform restriction phenomena for certain lattice subsets and applications to nonlinear evolution equations. I. Schrödinger equations. Geom. Funct. Anal., 3(2):107–156, 1993."...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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3ebd320977f355b5fbc7ef4aa88436e2c662f51a
subsection
4
62
Introduction
Heuristically, we have for any \nu >s_d>s that|\nabla |^{\nu } \nabla P_1 F \cdot \nabla P_{\gg 1} F^\omega \simeq \int _0^t \sin ((t-s)|\nabla |)~ \nabla P_1 F \cdot |\nabla |^{\nu -1} \nabla P_{\gg 1} FThus, the linear evolution F_n^\omega (t) is attacked by more than s derivatives. Since the Duhamel integral does no...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1016/s0012-9593(00)00109-9", "end": 507, "openalex_id": "https://openalex.org/W2058332344", "raw": "Damiano Foschi and Sergiu Klainerman. Bilinear space-time estimates for homogeneous wave equations. Ann. Sci. École Norm. Sup. (4), 33(2)...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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06304111c82d3a72bc63a93c818bafe42460369e
subsection
5
62
Introduction
Then, the equation for v_n reads{\left\lbrace \begin{array}{ll} -\partial _{tt} v_n + \Delta v_n = |\nabla v_n|^2 + 2 \nabla u_{n-1} \cdot \nabla v_n \\ v_n|_{t=0} = Q_{N} f_0^\omega ~,~ ~ \partial _t v_n |_{t=0} = Q_{N} f_1^\omega ~. \end{array}\right.}To control v_n uniformly in n \ge 0 , it is necessary to decompose...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1811, "openalex_id": "", "raw": "A. de Bouard and A. Debussche. A stochastic nonlinear Schrödinger equation with multiplicative noise. Comm. Math. Phys., 205(1):161–181, 1999.", "source_ref_id": "6c001de4c3fea21ec0082d4f4a8f...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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eb20f151f8992b0cb7d36c9d005d6c498e34efdd
subsection
6
62
Introduction
For this, we use a result of Geba and Tataru and the re-centered Besov-type spaces from Section REF . Finally, we control the nonlinear component w_n . To handle the low-high interaction term \nabla P_1 w \cdot \nabla F_n^\omega , we place w_n in a function space that is concentrated at frequencies \sim N .
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1081/pde-200059294", "end": 102, "openalex_id": "https://openalex.org/W1966914714", "raw": "Daniel Tataru and Dan-Andrei Geba. Dispersive estimates for wave equations. Comm. Partial Differential Equations, 30(4-6):849–880, 2005.", ...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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fd79620901fdbaf70e807266403c0ec2e5a623e4
subsection
7
62
Notation and Preliminaries
In this section, we will provide the necessary notation and preliminaries for the rest of the paper. In Section REF , we construct spaces of frequency-localized functions. In Section REF , we recall the Strichartz estimates for the wave equation. In particular, we describe the refinement of Klainerman and Tataru .
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 315, "openalex_id": "", "raw": "Sergiu Klainerman and Daniel Tataru. On the optimal local regularity for Yang-Mills equations in {\\bf R}^{4+1}. J. Amer. Math. Soc., 12(1):93–116, 1999.", "source_ref_id": "97eec346c2b33cef96...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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7b34d72edbddf0b9e9d45f5e132305a5776838d5
subsection
8
62
Function Spaces
For any function f\in L^1(\mathbb {R}^d) , we define its Fourier transform \widehat{f} by\widehat{f}(\xi ) := \frac{1}{(2\pi )^{\frac{d}{2}}} \int _{\mathbb {R}^d} \exp (-i x \cdot \xi ) f(x) ~.Let \varphi \colon \mathbb {R}^d \rightarrow \mathbb {R} be a smooth, compactly supported function s.t. \varphi |_{B(0,1)} \eq...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.48550/arxiv.math/0010068", "end": 960, "openalex_id": "https://openalex.org/W2951985707", "raw": "Terence Tao. Global regularity of wave maps. I. Small critical Sobolev norm in high dimension. Internat. Math. Res. Notices, (6):299–328, 2...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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66ce4833a4fc1b4fe0b99e7854a7814fdcdd7e1a
subsection
9
62
Function Spaces
We define frequency localized versions of the L_t^\infty L_x^2 -norm by\Vert u \Vert _{}&:= \sum _{M\ge 1} c_{N,D}(M) \Vert P_M u \Vert _{L_t^\infty L_x^2([0,T]\times )}~,\\ \Vert u \Vert _{}&:= \sum _{M\ge 1} c_{\le N,D}(M) \Vert P_M u \Vert _{L_t^\infty L_x^2([0,T]\times )}~.Similarly, we define frequency localized v...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1552, "openalex_id": "", "raw": "A. de Bouard and A. Debussche. A stochastic nonlinear Schrödinger equation with multiplicative noise. Comm. Math. Phys., 205(1):161–181, 1999.", "source_ref_id": "6c001de4c3fea21ec0082d4f4a8f...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
[ -0.09871617704629898, 0.05344836786389351, -0.04154382273554802, -0.002737664617598057, 0.0165900569409132, -0.0061239744536578655, 0.02216077409684658, -0.011019337922334671, 0.008050831966102123, 0.003397756488993764, -0.004296320956200361, -0.00013068293628748506, 0.013987843878567219, ...
afca54a8d90484a2babfae967f1134152fd6a58c
subsection
10
62
Function Spaces
Since \Vert u \Vert _{([0,t])} is a uniform limit of the partial sums in M \ge 1 , the result follows. Equipped with the functions spaces above, we are now ready to define the function space for the solution w_n of (REF ). For given parameters \nu > 2 , \sigma = \nu -1 - , and \eta ,D > 0 , we set\begin{aligned}([0,T]...
{ "cite_spans": [] }
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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e871097e9e8fa13d8ec3a7febd9d1477fffda525
subsection
11
62
Function Spaces
We define the weight functionc^{\rho ,\gamma }_{k,D}(M) := M^\rho \max \left( 1, \frac{M}{N^\gamma } \right)^{D}~.Using this weight function, we set\Vert f \Vert _{} := \sum _{M\ge 1} c^{\rho ,\gamma }_{k,D}(M) \Vert P_{M;k} f \Vert _{L_x^2()} \quad \text{and} \quad := \lbrace f \in L_x^2()\colon \Vert f \Vert _{} < \i...
{ "cite_spans": [] }
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
[ -0.00976533256471157, -0.010078128427267075, -0.04781961441040039, -0.02755654789507389, -0.03001314029097557, -0.030104689300060272, 0.022414490580558777, 0.04537828266620636, 0.02114804834127426, -0.007587205618619919, -0.00627498934045434, 0.0028037186712026596, 0.009467795491218567, 0....
f6372387bc064d1136d6bd26beab33c2db5ba4e0
subsection
12
62
Strichartz Estimates
First, we state a local Strichartz estimate in the form needed for this paper.[Strichartz Estimate] Let \nu > 2 and let \sigma = \nu - 1 - \delta , where \delta >0 is small. Let 0 < T \le 1 and let u be a solution of{\left\lbrace \begin{array}{ll} -\partial _{tt} u + \Delta u = F \qquad \qquad \text{for} ~ (t,x)\in [0,...
{ "cite_spans": [ { "arxiv_id": "", "doi": "10.1353/ajm.1998.0039", "end": 976, "openalex_id": "https://openalex.org/W2102327241", "raw": "Markus Keel and Terence Tao. Endpoint Strichartz estimates. Amer. J. Math., 120(5):955–980, 1998.", "source_ref_id": "4e1f1465e80efee14110a...
1809.00220
Almost sure local well-posedness for a derivative nonlinear wave equation
[ "Bjoern Bringmann" ]
[ "math.AP" ]
2,018
en
Mathematics
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