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Characterization of Electro-Optical Devices with Low Jitter Single Photon Detectors -- Towards an Optical Sampling Oscilloscope Beyond 100 GHzOct 12 2018We showcase an optical random sampling scope that exploits single photon counting and apply it to characterize optical transceivers. We study single photon detectors w... | CommonCrawl |
I kind of get the idea of singlet and triplet states. But why are they called singlet and triplet (what is the single and what is the triple in these cases)?
I feel that I am missing something obvious!
The terms arose back in the early days of quantum physics when spectral lines that were expected to be singlets were a... | CommonCrawl |
I was wondering if this was a true chaotic map and if it might have any interesting properties.
As far as I know, there's no hard-and-fast definition of a "true chaotic map". But there are certainly some that everybody agrees are chaotic - for example, the logistic map, with its famous bifurcation diagram.
For your map... | CommonCrawl |
Before talking about why it didn't work, let's talk about how it works.
TRIACs are TRiodes for Alternating Current which means that they're electrically controllable switches for AC currents. I've used TRIACs before in my EL wire glasses where they turned EL wire on and off to the beat of an audio track.
In that case, ... | CommonCrawl |
Clicking in an area with this tool selected fills that area with the selected color.
When a blank cell is discovered, this algorithm helps in revealing neighboring cells. This step is done recursively till cells having numbers are discovered.
Flood fill algorithm can be simply modeled as graph traversal problem, repres... | CommonCrawl |
There are $n$ heaps of sticks and two players who move alternately. On each move, a player chooses a non-empty heap and removes $1$, $2$, or $3$ sticks. The player who removes the last stick wins the game.
Your task is to find out who wins if both players play optimally.
The first line contains an integer $n$: the numb... | CommonCrawl |
My question is that why in discrete-time Fourier series representation, they only sum up from $0$ to $N - 1$ instead of from $-\infty$ to $\infty$ ? Is the slides above gives a wrong formula ?
Not the answer you're looking for? Browse other questions tagged signal-analysis fourier-transform fourier-series or ask your o... | CommonCrawl |
Abstract: In this paper we introduce an algebra embedding $\iota:K< X >\to S$ from the free associative algebra $K< X >$ generated by a finite or countable set $X$ into the skew monoid ring $S = P * \Sigma$ defined by the commutative polynomial ring $P = K[X\times N^*]$ and by the monoid $\Sigma = < \sigma >$ generated... | CommonCrawl |
A system of polynomial equations $f=(f_1(x_1,\ldots, x_m),\ldots, f_n(x_1,\ldots,x_m))$ is called overdetermined, if it has more equations than variables; i.e., when $n>m$. HomotopyContinuation.jl can solve overdetermined systems. Here is a simple example.
This system has 4 equation in 3 variables. One might expect tha... | CommonCrawl |
Abstract: This research project undertakes a comprehensive analysis of RF beamforming techniques for design, simulation, fabrication, and measurement of Butler Matrix and Rotman Lens beamforming networks. It is aimed to develop novel and well-established designs for steerable antenna systems that can be used in vehicul... | CommonCrawl |
Lendek Zs., Lauber J., Guerra T-M. 2013. Periodic Lyapunov functions for periodic TS systems. Systems & Control Letters. 62:303–310.
Guerra T-M, Estrada-Manzo V., Lendek Zs.. 2015. Observer design for Takagi-Sugeno descriptor models: an LMI approach. Automatica. 52:154–159.
Estrada-Manzo V., Guerra T-M, Lendek Zs.. 201... | CommonCrawl |
Mary Anderson might seem like your ordinary neighbor, except for one thing. She has a mind-bending number of cats. Don't ask us why, or how - she just does.
There's a cat show coming up and the cash rewards are huge. So Mary plans to bring as many cats as possible.
She knows her short-haired cats are better looking tha... | CommonCrawl |
Abstract: Based on Markowitz's portfolio theory we construct the multicriteria Boolean problem with Wald's maximin efficiency criteria and the Pareto-optimality principle. We obtained lower and upper attainable bounds for the stability radius of the problem in the cases of linear metric $l_1$ in the portfolio and the m... | CommonCrawl |
In the kingdom of Boolistan, every inhabitant is either a Knight, Knave or Normal. Knights can only make true statements, Knaves can only lie, and Normals must either tell the truth or lie.
Warmup: The local tavern only allows Normals (no one can relax around Knights and Knaves). What can a Normal say to prove their id... | CommonCrawl |
In these lecture notes at page 15 and 16 I am looking at the definition of diffusion process and the three coniditions which are stated at the top of page 16. These can be difficult to read mathematically.
How would you explain what those conditions are and what are their implications? For instance, let's look at a sim... | CommonCrawl |
Abstract: A novel proposal is outlined to determine scattering amplitudes from finite-volume spectral functions. The method requires extracting smeared spectral functions from finite-volume Euclidean correlation functions, with a particular complex smearing kernel of width $\epsilon$ which implements the standard $i\ep... | CommonCrawl |
I am reading a beautiful paper called A self-contained, brief and complete formulation of Voevodsky's Univalence Axiom by Martín Hötzel Escardó, and it really takes time to understand some of the formulas. In fact, it takes so much time, that I've spent an hour on the airplane from Frankfurt to Kyiv gazing at just the ... | CommonCrawl |
Let $\mathcal U$ be a cover for $S$.
A subcover of $\mathcal U$ for $S$ is a set $\mathcal V \subseteq \mathcal U$ such that $\mathcal V$ is also a cover for $S$.
A finite subcover of $\mathcal U$ for $S$ is a subcover $\mathcal V \subseteq \mathcal U$ which is finite.
A countable subcover of $\mathcal U$ for $S$ is a ... | CommonCrawl |
Does it matter if you use big $L$ or little $l$ when talking about $L$-norms?
I was reading a post on Quora regarding the application of "$l_1$", "$l_2$" norms for convex linear programming when I became very confused at which $L$-norm the posters are actually referring to.
To me it makes a huge difference which L-norm... | CommonCrawl |
What is "Real coordinate space"?
What is the Real Coordinate Space in the discussion of vectors?
How does it relate to Cartesian Coordinate System and Euclidean Space?
P.S. Please, use naive terms.
In my experience the expression "real coordinate space" emphasizes that we are not working over the complex numbers, i.e. ... | CommonCrawl |
Abstract: We study the detailed evolution of the fine-structure constant $\alpha$ in the string-inspired runaway dilaton class of models of Damour, Piazza and Veneziano. We provide constraints on this scenario using the most recent $\alpha$ measurements and discuss ways to distinguish it from alternative models for var... | CommonCrawl |
Plot Latent Dirichlet Allocation output using t-SNE?
I found this blog where the author trains an Latent Dirichlet Allocation (LDA) model on 20 Newsgroups. The output is then an $N\times K$ matrix where $N$ is the number of articles (row wise) and $K$ is the number of topics (column wise) i.e. each row is a discrete to... | CommonCrawl |
We recently saw The Jacobi Iteration Method for solving a system of linear equations $Ax = b$ where $A$ is an $n \times n$ matrix. We will now look at another method known as the Gauss-Seidel Iteration Method that is somewhat of an improvement of the Jacobi Iteration Method.
For the Gauss-Seidel Method, we once again i... | CommonCrawl |
We consider generalized linear models (GLMs) where an unknown $n$-dimensional signal vector is observed through the application of a random matrix and a non-linear (possibly probabilistic) componentwise output function.
We study the models in the high-dimensional limit, where the observation consists of $m$ points, and... | CommonCrawl |
Abstract : Amyloids are ordered protein aggregates, found in all kingdoms of life, and are involved in aggregation diseases as well as in physiological activities. In microbes, functional amyloids are often key virulence determinants, yet the structural basis for their activity remains elusive. We determined the fibril... | CommonCrawl |
Jessica is volunteering at the local animal shelter. Today, she has to buy some food and medication for the dogs and cats at the shelter. Jessica needs to figure out how much she can spend on supplies for the dogs and cats. This is an example of solving word problems using systems of equations.
There are 16 cats and 24... | CommonCrawl |
Changes of Amylases and Carbohydrates in Sweetpotatoes During Storage and Their Effects on Viscosity of Sweetpotato Puree.
A critical problem associated with the production of sweetpotato puree is the inconsistency of final product. Two possible factors, amylase activity and carbohydrate content in sweetpotatoes during... | CommonCrawl |
Jason and I had a rather interesting pair programming session last week where we tackled a problem that I found on Topcoder. It is in fact a slight twist (easier) on the actual topcoder problem as I didn't have it to hand when we were pairing.
If that's not clear enough, this diagram should help articulate what the pro... | CommonCrawl |
A famous result of Borel says that the cohomology of $\mathcal A_g$ stabilizes. This was generalized to the Satake compactification by Charney and Lee. In this talk we will discuss whether the result can also be extended to toroidal compactifictaions. As we shall see this cannot be expected for the second Voronoi compa... | CommonCrawl |
We describe a nice way to do it, unfortunately in words. It really needs a picture.
Put down your cardboard rectangle, one corner at the origin, the long side along the positive $x$-axis. So the corners of your cardboard rectangle are at $(0,0)$, $(0,45)$, $(45,20)$, and $(0,20)$.
Draw a $30\times 30$ square, with corn... | CommonCrawl |
Abstract: If binary black holes form following the successive core collapses of sufficiently massive binary stars, precessional dynamics may align their spins $\mathbf S_1$ and $\mathbf S_2$ and the orbital angular momentum $\mathbf L$ into a plane in which they jointly precess about the total angular momentum $\mathbf... | CommonCrawl |
The Fields Institute, Toronto, Canada, invited speaker.
Kyoto Univ., Kyoto, Japan, plenary speaker.
Title: "Control of vortex dominated flows through vortex dynamics"
KIAS, Seoul, Korea, invited speaker, Dec. 26-28.
NCTS, Nat. Taiwan University, Taipei, plenary speaker, Nov. 24--26.
Title:"Mathematical research on Micr... | CommonCrawl |
Abstract: Mathematical problems of digital terrain analysis include interpolation of digital elevation models (DEMs), DEM generalization and denoising, and computation of morphometric variables by calculation of partial derivatives of elevation. Traditionally, these procedures are based on numerical treatments of two-v... | CommonCrawl |
When Google DeepMind's AlphaGo shockingly defeated legendary Go player Lee Sedol in 2016, the terms artificial intelligence (AI), machine learning and deep learning were propelled into the technological mainstream. AI is generally defined as the capacity for a computer or machine to exhibit or simulate intelligent beha... | CommonCrawl |
The "symmetry" approach notices that $f(x)=x(6-x)$, and that replacing $x\leftrightarrow6-x$ does not change $f(x)$ which means it doesn't change the maximum. Then the solution says that the only value of $x$ that is unchanged by $x\leftrightarrow 6-x $ is $x=3$. So that's the location of the maximum.
This is all the s... | CommonCrawl |
Volume 12, Number 10 (2007), 1135-1166.
We consider the Cauchy-Dirichlet problem of the heat equation in the exterior domain of a ball, and study the movement of hot spots $H(t)$ as $t\to\infty$. In particular, we give a rate for the hot spots to run away from the boundary of the domain as $t\to\infty$. Furthermore we ... | CommonCrawl |
According to our database1, Yang Li authored at least 795 papers between 1988 and 2019.
Divided DQ Small-Signal Model: A New Perspective for the Stability Analysis of Three-Phase Grid-Tied Inverters.
An Automatic Impedance Matching Method Based on the Feedforward-Backpropagation Neural Network for a WPT System.
Modifie... | CommonCrawl |
We generalize the results of Bilyk et al. on discrepancy in spaces with bounded mean oscillation and in exponential Orlicz spaces to arbitrary dimension. In particular, we use dyadic harmonic analysis to prove upper bounds of the BMO and exponential Orlicz space norms of the discrepancy function for the so-called order... | CommonCrawl |
A $2$ $km$ long broadcast LAN has $10^7$ bps bandwidth and uses CSMA/CD. The signal travels along the wire at $2 \times 10^8$ m/s. What is the minimum packet size that can be used on this network?
packet size) must be greater than twice the propagation delay.
(doubt) yes the packet size ahould be 25 bytes, but question... | CommonCrawl |
Abstract: We propose a method to define a $d+1$ dimensional geometry from a $d$ dimensional quantum field theory in the $1/N$ expansion. We first construct a $d+1$ dimensional field theory from the $d$ dimensional one via the gradient flow equation, whose flow time $t$ represents the energy scale of the system such tha... | CommonCrawl |
Are there any primes that are never a factor of a Carmichael number?
After a quick glance at some Carmichael number factors, $p$ must be greater or equal to $53$.
$N$ $|$ $21$ $=$ $3*7$, $N-1$ $|$ $2$, $N-1$ $|$ $2*3$. $N$ $|$ $3$ on the other hand, we also have $N-1$ $|$ $3$, a contradiction since no two consecuative ... | CommonCrawl |
Abstract: The purpose of this paper is to describe a method for computing homotopy groups of the space of $\alpha$-stable representations of a quiver with fixed dimension vector and stability parameter $\alpha$. The main result is that the homotopy groups of this space are trivial up to a certain dimension, which depen... | CommonCrawl |
Soooo use the natural projection mapping and show that the kernel equals $B_1 \oplus .... \oplus B_k$? And that it's an epimorphism? Can somebody help me with the details? What are the main differences to this as to what proving it for rings and ideals? Nothing I suppose since Ideals are R-Modules... anyway yeah I just... | CommonCrawl |
Abstract: We reconsider the calculation of the one-loop effective action for an open Green-Schwarz superstring in the $AdS_5\times S^5$ background for a circular boundary loop. By an explicit computation of the ratio of relevant determinants, describing semi-classical fluctuations about the minimal surface in AdS and f... | CommonCrawl |
In general, we can imagine whether or not a structure is rigid or not if we imagine the squares with braces as metal plate and the squares without braces as pieces of paper. If the structure bends while holding it, then it is not rigid.
We will now define a rigid structure in terms of graphs.
Definition: A structure is... | CommonCrawl |
Does an adjoint of an internal Hom functor of a prounital closed category define a tensor product?
A closed category is a category equipped with internal Hom functors along with a unit object. Now this answer shows that if $C$ is a closed category whose internal Hom functor has a left adjoint, then this left adjoint de... | CommonCrawl |
Abstract: We characterize models where electroweak symmetry breaking is driven by two light Higgs doublets arising as pseudo-Nambu-Goldstone bosons of new dynamics above the weak scale. They represent the simplest natural two Higgs doublet alternative to supersymmetry. We construct their low-energy effective Lagrangian... | CommonCrawl |
Abstract : Using LOFAR, we have performed a very-low-frequency (115−155 MHz) radio survey for millisecond pulsars (MSPs). The survey targeted 52 unidentified Fermi γ-ray sources. Employing a combination of coherent and incoherent dedispersion, we have mitigated the dispersive effects of the interstellar medium while ma... | CommonCrawl |
Abstract: Results from the study of hadronic jets in hadron-hadron collisions at order $\alpha_s^3$ in perturbation theory are presented. The focus is on various features of the internal structure of jets. The numerical results of the calculation are compared with data where possible and exhibit reasonable agreement. | CommonCrawl |
Throughout this discussion, the dynamical system X, the group G, and the group U will be fixed.
thus turning the sequence of groups into a chain complex.
An n-chain with vanishing boundary is called an n-cycle, while an n-chain which is the boundary of an (n+1)-chain is called an n-boundary; the spaces of n-cycles and ... | CommonCrawl |
You are in charge of designing an advanced centralized traffic management system for smart cars. The goal is to use global information to instruct morning commuters, who must drive downtown from the suburbs, how best to get to the city center while avoiding traffic jams.
Unfortunately, since commuters know the city and... | CommonCrawl |
Picture of the periodic table.
A category with one object is a monoid: picture.
and Poincare dual picture of rocks on a line.
A 2-category with one object is a monoidal category: pictures.
of a monoid hold up to isomorphism. Coherence law for associator.
can switch rocks past each other.
Definition of inverse morphism... | CommonCrawl |
Abstract: An extension of the standard model of electro-weak interactions by an extra abelian gauge boson is given, in which the extra gauge boson and the hypercharge gauge boson both couple to an axionic scalar in a form that leads to a Stueckelberg mass term. The theory leads to a massive Z$'$ whose couplings to ferm... | CommonCrawl |
Electron capture spectroscopy (ECS) measures the surface electron spin polarization (ESP) by passing a deuteron ion beam very close to and grazing an atomically flat sample. Polarized electrons that are captured polarize the deuterons by the hyperfine interaction. The polarization of the deuterons is measured by the as... | CommonCrawl |
Abstract: We study the effective physics of F-theory at order $\alpha'^3$ in derivative expansion. We show that the ten-dimensional type IIB eight-derivative couplings involving the graviton and the axio-dilaton naturally descend from pure gravity in twelve dimensions. Upon compactification on elliptically fibered Cala... | CommonCrawl |
A company has $n$ employees with certain salaries. Your task is to keep track of the salaries and process queries.
The first input line contains two integers $n$ and $q$: the number of employees and queries. The employees are numbered $1,2,\ldots,n$.
The next line has $n$ integers $p_1,p_2,\ldots,p_n$: each employee's ... | CommonCrawl |
An introduction on using arrays can be found here.
Whether taught formally in school or not, the properties that apply to numbers in operations are encountered by children during their learning of mathematics. A sound understanding of these properties provides a good basis for developing operations, including mental ca... | CommonCrawl |
My aim is to relate a certain (equivariant) linear sigma model on a disc (with a non-compact target $\mathbb C$) as constructed in the exciting work of Gerasimov, Lebedev and Oblezin in Archimedean L-factors and Topological Field Theories I, to integrable systems (in the sense of Dubrovin, if you like).
More precisely,... | CommonCrawl |
The goal of this post is to give an overview of Bayesian statistics as well as to correct errors about probability that even mathematically sophisticated people commonly make. Hopefully by the end of this post I will convince you that you don't actually understand probability theory as well as you think, and that proba... | CommonCrawl |
In my previous post, I noted that the ability to see in color gave me an apparent superpower in quickly analyzing Travis CI and pytest logs.
I wondered: how hard is it to use colorblind friendly colors here?
I had in the back of my mind the thought of the next time I sit down and pair program with someone who is colorb... | CommonCrawl |
Abstract: The most straightforward method to accelerate Stochastic Gradient Descent (SGD) is to distribute the randomly selected batch of inputs over multiple processors. To keep the distributed processors fully utilized requires commensurately growing the batch size; however, large batch training usually leads to poor... | CommonCrawl |
Abstract: This thesis introduces the idea of two-level type theory, an extension of Martin-Löf type theory that adds a notion of strict equality as an internal primitive.
A type theory with a strict equality alongside the more conventional form of equality, the latter being of fundamental importance for the recent inno... | CommonCrawl |
Get an international perspective Development Studies is an interdisciplinary area covering a wide range of aspects of life in developing countries, their development process, and relationships with the …... A minor is the determinant of the square matrix formed by deleting one row and one column from some larger square... | CommonCrawl |
Use this tag for questions related to algorithmic randomness, which is the study of random individual elements in sample spaces.
If $k$ balls are thrown into $n$ bins, how many positions $i$ are there such that, bin $i$ and $ i+1$ are empty?
Assume the $k$ balls are thrown independently and uniformly at random, into $n... | CommonCrawl |
Professor Halfbrain has spent the last weekend with filling the squares of a $99\times99$ chessboard with real numbers from the interval $[-1,+1]$. Whenever four squares form the corners of a rectangle (with sides parallel to the sides of the chessboard), then the four numbers in these squares had to add up to zero.
Pr... | CommonCrawl |
I am using a DAC to transmit 2 different voltage levels. High and low. At 1Gsps. There is no carrier wave or anything. These are just raw 0 and 1 time samples going across a wire.
On my ADC I am also sampling at 1Gsps and I'm able to fully reconstruct the transmitted signal. In other words I can tell which sample is a ... | CommonCrawl |
This is the first article in what will become a set of tutorials on how to carry out natural language document classification, for the purposes of sentiment analysis and, ultimately, automated trade filter or signal generation. This particular article will make use of Support Vector Machines (SVM) to classify text docu... | CommonCrawl |
A binary operation is the special case of an operation where the operation has exactly two operands.
If $S = T$, then $\circ$ can be referred to as a binary operation on $S$.
Let $\circ: S \times T \to U$ be a binary operation.
This convention is called infix notation.
For a given operation $\circ$, let $z = x \circ y$... | CommonCrawl |
...up to 100 to come... I'll post them a few at a time. Why is this first one #3: Numbering is as per my heptomino data file and will skip rectifiable and uninteresting heptominoes. Some of them will be posed as no-computer hand-tiling only puzzles.
The goal is to tile rectangles as small as possible with the given hep... | CommonCrawl |
In a classical design of experiments (DoE) you usually choose a set of points according to some rule and perform experiments to be able to, for example, create a response surface. But when the properties of the process you are trying to describe is difficult to understand and can be destroyed if wrong parameters are ap... | CommonCrawl |
The replicator-mutator equations from evolutionary dynamics serve as a model for the evolution of language, behavioral dynamics in social networks, and decision-making dynamics in networked multi-agent systems. Analysis of the stable equilibria of these dynamics has been a focus in the literature, where symmetry in fit... | CommonCrawl |
In this talk we will study the equivalence relation generated by linked curves in $ \mathbf P^3 $. In particular we will define the Rao module and show that (up to shifts and duals) it determines the equivalence class. Time permitting we will study curves that are cut out by three surfaces. | CommonCrawl |
Description: This talk will begin with the material from the earlier talk posted here. After introducing the background we will focus on just the so-called splitting relation and some of its generalizations. Again, it is joint with Juris Steprāns.
Definition. A family $\mathcal F$ of infinite subsets of $\mathbb N$ is ... | CommonCrawl |
Abstract: The spectrum of quantum and elastic waveguides in the form of a cranked strip is studied. In the Dirichlet spectral problem for the Laplacian (quantum waveguide), in addition to well-known results on the existence of isolated eigenvalues for any angle $\alpha$ at the corner, a priori lower bounds are establis... | CommonCrawl |
and I am an associate professor in the Mathematical Institute at the University of Wrocław.
applications to ergodic theory and probability theory.
Member of the Institute for Advanced Study, Princeton, (09.2016-08.2017).
Habilitation in Mathematics at the University of Wrocław, (20.06.2017).
Habilitation in Mathematics... | CommonCrawl |
Therefore every section $\phi$ of $E$ yields a section $j^\infty(\phi)$ of the jet bundle, given by $\phi$ and all its higher order derivatives.
Given a field bundle […], we know what type of quantities the corresponding fields assign to a given spacetime point. Among all consistent such field configurations, some are ... | CommonCrawl |
Question. If you collect all the hot-air that you have breathed in your life, what would the volume be? If you made a hot-air balloon, would it be able to lift you and all your possessions?
To answer, let's start with the first part. How much do I breathe? If I imagine inhaling and then exhaling a deep, big breath, I f... | CommonCrawl |
"You're making an error: How can you compare two orthogonal values, one it's zero ?"
This seems trivial, but has very, very deep consequences, for example in SET THEORY, or when $\infty$ is, for example the number of the digits of an Irrational value (like $\pi$ ).
-if you try to push vertically a vagon on the rails, i... | CommonCrawl |
Preview box slightly wider than answer box and Preview button disappearance issue.
"Preview" button slows down server response even after unticked?
When half-way composing the post Some more questions on Haag's theorem, I ticked the "Preview" button to check whether the Latex were written correctly. After seeing everyt... | CommonCrawl |
If we consider $x_t$ an Ornstein-Uhlenbeck process (with $W_t$ the Wiener process), does anyone know what would be the variance of the convolution of $x_t$ with a given filter $A$ i.e. $V(x_t \star A)$ ?
But I can't go anywhere from the last equation. Even taking $A$ as a dirac, it's not easy...any help would be greatl... | CommonCrawl |
Let $X$ be a compact connected Riemann surface and $E_P$ a holomorphic principal $P$--bundle over $X$, where $P$ is a parabolic subgroup of a complex reductive affine algebraic group $G$. If the Levi bundle associated to $E_P$ admits a holomorphic connection, and the reduction $E_P \subset E_P\times^P G$ is rigid, we p... | CommonCrawl |
Moore's Law states that the number of transistors on a chip will double every two years. Amazingly, this law has held true for over half a century. Whenever current technology no longer allowed more growth, researchers have come up with new manufacturing technologies to pack circuits even denser. In the near future, th... | CommonCrawl |
Farmer John's $N$ cows ($5 \leq N \leq 50,000$) are all located at distinct positions in his two-dimensional field. FJ wants to enclose all of the cows with a rectangular fence whose sides are parallel to the x and y axes, and he wants this fence to be as small as possible so that it contains every cow (cows on the bou... | CommonCrawl |
I am a theoretical physicist with $\hbar \neq 0, c \neq \infty, G \neq 0$ rather $\hbar=c=G=1$.
20 If you're given an hour, is it bad to finish a job talk in half an hour?
15 Is it possible to reconstruct the Hamiltonian from knowledge of its ground state wave function?
10 Given three reference letters in a postdoc app... | CommonCrawl |
Let $M$ be a 3-manifold with boundary. If $M$ has an orientable finite cover that is a Seifert fiber space, then is $M$ also a Seifert fiber space?
This is certainly true, though one needs to be sufficiently careful about one's definition of Seifert fibred---it's important to allow fibres with a neighbourhood that look... | CommonCrawl |
Coulomb branches of 3-dimensional N=4 super-symmetric gauge theories and their quantizations and study representations of the resulting non-commutative algebras.
The 2nd subject has to do with representation theory of p-adic groups (in particular, p-adic interpretation of Lusztig's asymptotic Hecke algebra and its gene... | CommonCrawl |
I've been writing a little about some results on graph theory, and I want some nice examples of applying the results to some interesting finite connected graphs to show how the results might be useful. I'm therefore looking for a reference which has a collection of interesting graphs, ideally along with a picture if po... | CommonCrawl |
Abstract : A non-parametric statistical test that allows the detection of anomalies given a set of (possibly high dimensional) sample points drawn from a nominal probability distribution is presented. Its test statistic is based on the distance between a query point mapped in a feature space and its projection on the e... | CommonCrawl |
How to solve the following Frobenius norm-minimization problem?
But what about the extended version?
Is there any analytical solution to this? Or we have to use gradient descent like method?
The challenge is to compute $\nabla f_2 (\mathrm X)$. Since $f_2$ is quartic in $\mathrm X$, the gradient $\nabla f_2$ should be ... | CommonCrawl |
In a previous post about Dirichlet Series, I referenced some properties of a few arithmetic functions like $\tau$, the divisor-counting function, $\sigma$, the divisor sum function, $\varphi$, the Euler totient function, $\mu$, the Mobius mu function, and $\sigma_a$, the generalized divisor sum function. Many of these ... | CommonCrawl |
HPGMG-FE solves constant- and variable-coefficient elliptic problems on deformed meshes using FMG. It uses $Q_2$ elements and evaluates all operators matrix-free, exploiting tensor-product structure. This structure is similar to that used in spectral element methods (multiple Gordon Bell prizes), but is still beneficia... | CommonCrawl |
Abstract: This paper reviews the Dalitz plot analysis for the decays $B^0(\bar B^0) \to \rho \pi \to \pi^+ \pi^- \pi^0$. We discuss what can be learned about the ten parameters in this analysis from untagged and from tagged time-integrated data. We find that, with the important exception of the interesting CP violating... | CommonCrawl |
June 2015, 462 pages, hardcover, 16.5 x 23.5 cm.
The book gives an elementary and comprehensive introduction to Spin Geometry, with particular emphasis on the Dirac operator which plays a fundamental role in differential geometry and mathematical physics.
After a self-contained presentation of the basic algebraic, geom... | CommonCrawl |
Is there a way to compute the DV01 of a bond future, from it's underlying cheapest to deliver bond's DV01?
For example, is this correct? : DV01 future = DV01 CTD / conversion factor?
Or any other formula that would give future's DV01?
Suppose the CTD DV01 is 10cents.
If the CTD yield falls by 1bp then price goes up by ... | CommonCrawl |
The wide channels feature combines two adjacent channels to form a new, wider channel to facilitate high-data-rate transmissions in multiple-input- multiple-output (MIMO)-based IEEE 802.11n networks. Using a wider channel can exacerbate interference effects. Furthermore, contrary to what has been reported by prior stud... | CommonCrawl |
We present the Green-Schwarz action for Type IIA strings on $AdS_4\times CP^3$. The action is based on a $\Zop_4$ automorphism of the coset $OSp(4|6)/(SO(1,3)\times SU(3)\times U(1))$. The equations of motion admit a representation in terms of a Lax connection, showing that the system is classically integrable. | CommonCrawl |
A large part of the world economy depends on oil, which is why research into new methods for finding and extracting oil is still active. Profits of oil companies depend in part on how efficiently they can drill for oil. The International Crude Petroleum Consortium (ICPC) hopes that extensive computer simulations will m... | CommonCrawl |
The main goal of this workshop is to bring together a group of researchers with common interests from the different countries participating in the COST action "Connecting insights in fundamental physics", allowing them to share experiences and to discuss possible collaborations in the field of Higgs and Flavour Physics... | CommonCrawl |
Suppose $K$ is an infinite field of char. $0$. Let $C$ be an $K$-irreducible affine algebraic $K$-curve and suppose that $P_1,\ldots, P_n$ are non-singular $K$-points of $C$. Can one always find a plane curve $D$ and a birational map (defined over $K$) $f:C\dashrightarrow D$ such that for all $1\leq i \leq n$, $f(P_i)$... | CommonCrawl |
Online services are increasingly intelligent. They evolve intelligently through A/B testing and experimentation, employ artificial intelligence in their core functionality using machine learning, and seamlessly engage human intelligence by connecting people in a low-friction manner. All of this has resulted in incredib... | CommonCrawl |
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