import Mathlib import OAI.Geometry.BallPacking.Fredholm.CompactFredholmAlternative import OAI.Geometry.BallPacking.Necessity.C1Energy import OAI.Geometry.BallPacking.Necessity.NonlinearCR namespace OAI noncomputable section open scoped ContDiff Topology open Set Function Filter open scoped ContDiff Topology Manifold open Set Function Filter MeasureTheory open Set Function MeasureTheory open Set Function open SymplecticBallPacking.Hamiltonian (Plane planarCurl) open SymplecticBallPacking.Hamiltonian (Plane planarCurl angularOneForm radiusSq planarArea planarArea_apply) open SymplecticBallPacking.Hamiltonian (Plane planarCurl angularOneForm) open SymplecticBallPacking.Hamiltonian (Plane angularOneForm) open SymplecticBallPacking.Hamiltonian open SymplecticBallPacking.Hamiltonian (Plane) open Set Filter Function open Set Filter MeasureTheory open scoped Topology open Set Filter Finset open scoped ContDiff Topology Classical open Set Filter open scoped BoundedContinuousFunction ContDiff Topology open Set Function Filter Topology open scoped NNReal open scoped ContDiff Topology BoundedContinuousFunction open Function open scoped Topology ContDiff open scoped ContDiff Topology Convolution open Set Filter Function MeasureTheory _root_.ContinuousLinearMap _root_.OAI.ContinuousLinearMap open Set Filter Function MeasureTheory open scoped ContDiff Topology open Set Filter Function MeasureTheory open SymplecticBallPacking.Hamiltonian namespace HigherDimensionalBallPacking.Rigidity open HigherDimensionalBallPacking.Rigidity theorem decaying_holomorphic_extends {n : ℕ} {u : ℂ → Phase n} (hholo : ∀ᶠ z in cocompact ℂ, DifferentiableAt ℂ u z) (hlim : Tendsto u (cocompact ℂ) (𝓝 0)) : ∃ v : ℂ → Phase n, ContDiffAt ℝ ∞ v 0 ∧ u =ᶠ[cocompact ℂ] fun z => v z⁻¹ := by have hi : Tendsto (fun z : ℂ => z⁻¹) (cocompact ℂ) (𝓝 (0:ℂ)) := by rw [←Metric.cobounded_eq_cocompact] exact tendsto_inv₀_cobounded have hl : Tendsto (fun z : ℂ => z⁻¹ • u z) (cocompact ℂ) (𝓝 (0:Phase n)) := by simpa only [zero_smul] using hi.smul hlim let V := infinityGerm u 0 have hV : AnalyticAt ℂ V 0 := infinityGerm_analyticAt hholo hl have hV0 : V 0 = 0 := by simp [V,infinityGerm] obtain ⟨r,hr,hVr⟩ := hV.exists_ball_analyticOnNhd have hball : Metric.ball (0:ℂ) r ∈ 𝓝 (0:ℂ) := Metric.ball_mem_nhds _ hr have hv := ((Complex.differentiableOn_dslope hball).mpr hVr.differentiableOn).analyticAt hball refine ⟨dslope V 0,hv.contDiffAt.restrict_scalars ℝ,?_⟩ filter_upwards [(isCompact_singleton (x := (0:ℂ))).compl_mem_cocompact] with z hz have hz0 : z ≠ 0 := by simpa using hz rw [dslope_of_ne V (inv_ne_zero hz0)] simp only [slope_def_module,sub_zero,V,infinityGerm,inv_ne_zero hz0, ite_false,ite_true,sub_zero,inv_inv,smul_smul,mul_inv_cancel₀ hz0,one_smul] theorem c1_decaying_CR_zero {n : ℕ} (K : ℂ → End n) (hK : ∀ z, Compatible (K z)) {u : ℂ → Phase n} (hu : ContDiff ℝ 1 u) (hCR : ∀ z, fderiv ℝ u z Complex.I=K z (fderiv ℝ u z 1)) (hholo : ∀ᶠ z in cocompact ℂ, DifferentiableAt ℂ u z) (hlim : Tendsto u (cocompact ℂ) (𝓝 0)) : u=0 := by obtain ⟨v,hv,he⟩ := decaying_holomorphic_extends hholo hlim have hru : ContDiff ℝ 1 (realCurve u) := hu.comp Complex.equivRealProdCLM.symm.contDiff have hcr (z : Plane) : fderiv ℝ (realCurve u) z (0,1)= K (Complex.equivRealProdCLM.symm z) (fderiv ℝ (realCurve u) z (1,0)) := by rw [realCurve_fderiv (hu.differentiable one_ne_zero _),realCurve_fderiv (hu.differentiable one_ne_zero _)] simpa only [Complex.equivRealProdCLM_symm_apply,Complex.ofReal_zero,Complex.ofReal_one, zero_mul,one_mul,add_zero,zero_add] using hCR (Complex.equivRealProdCLM.symm z) have hpos (z : Plane) : 0≤c1Area (realCurve u) z := by unfold c1Area rw [hcr] by_cases hz : fderiv ℝ (realCurve u) z (1,0)=0 · simp [hz,standardForm] · exact ((hK _).2.2 _ hz).le have hang : Tendsto (fun z : Plane => planarPullback (realCurve u) stdPrimitive z (planeRotation z)) (cocompact Plane) (𝓝 0) := by have hr : Tendsto Complex.equivRealProdCLM.symm (cocompact Plane) (cocompact ℂ) := Complex.equivRealProdCLM.symm.toHomeomorph.isClosedEmbedding.tendsto_cocompact have hh := (affine_primitive_angular_limit_zero hv he (stdPrimitive_smooth n).continuous).comp hr apply hh.congr intro z change stdPrimitive _ _=stdPrimitive _ _ have hd := realCurve_fderiv (z:=z) (hu.differentiable one_ne_zero _) (planeRotation z) rw [equivRealProd_rotation] at hd exact congrArg (stdPrimitive (u (Complex.equivRealProdCLM.symm z))) hd.symm obtain ⟨hai,ha0⟩ := c1_area_of_nonneg_of_angular_limit hru hpos hang have ha : c1Area (realCurve u)=0 := ((c1Area_continuous hru).ae_eq_iff_eq volume continuous_const).mp ((integral_eq_zero_iff_of_nonneg hpos hai).mp ha0) have hx (z : Plane) : fderiv ℝ (realCurve u) z (1,0)=0 := by by_contra hn have hp := (hK (Complex.equivRealProdCLM.symm z)).2.2 _ hn have hz := congrFun ha z change standardForm _ _=0 at hz rw [hcr] at hz linarith have hd (z : Plane) : fderiv ℝ (realCurve u) z=0 := by apply ContinuousLinearMap.ext intro w have hw : w=w.1 • ((1,0):Plane)+w.2 • ((0,1):Plane) := by ext <;> simp rw [hw,map_add,map_smul,map_smul,hx,hcr,hx,map_zero] simp have hc (z : ℂ) : u z=u 0 := by have hh := is_const_of_fderiv_eq_zero (hru.differentiable one_ne_zero) hd (Complex.equivRealProdCLM z) 0 simpa only [realCurve,Function.comp_apply,ContinuousLinearEquiv.symm_apply_apply,map_zero] using hh have hec : u=fun _ => u 0 := funext hc have hz : u 0=0 := tendsto_nhds_unique tendsto_const_nhds (hec ▸ hlim) funext z exact (hc z).trans hz local instance FrozenKernelLocal1 (n : ℕ) (R : ℝ) : NormedAddCommGroup (CompactHolderSpace (Phase n) R) := inferInstance local instance FrozenKernelLocal2 (n : ℕ) (R : ℝ) : NormedSpace ℝ (CompactHolderSpace (Phase n) R) := inferInstance theorem compactCRInverse_frozen_kernel {n : ℕ} (R : ℝ) (K : ℂ → End n) (hK : ∀ z, Compatible (K z)) (g : CompactHolderSpace (Phase n) R) (hCR : ∀ z, fderiv ℝ (compactCRInverseValue R g) z Complex.I= K z (fderiv ℝ (compactCRInverseValue R g) z 1)) : g=0 := by have hholo : ∀ᶠ z in cocompact ℂ, DifferentiableAt ℂ (compactCRInverseValue R g) z := by have he := hasCompactSupport_iff_eventuallyEq.mp (compactHolderValue_compactSupport R g) rw [coclosedCompact_eq_cocompact] at he filter_upwards [he] with z hz apply differentiableAt_complex_iff_differentiableAt_real.mpr refine ⟨(compactCRInverse_contDiff R g).differentiable one_ne_zero z,?_⟩ exact sub_eq_zero.mp ((compactCRInverse_rightInverse R g z).trans hz) have hu := c1_decaying_CR_zero K hK (compactCRInverse_contDiff R g) hCR hholo (compactCRInverse_tendsto_zero R g) apply Subtype.ext apply holderValue_injective ((1:ℝ)/3) apply BoundedContinuousFunction.ext intro z have he := compactCRInverse_rightInverse R g z rw [hu] at he simpa using he.symm end HigherDimensionalBallPacking.Rigidity open scoped ContDiff Topology BoundedContinuousFunction open Set Filter Function namespace HigherDimensionalBallPacking.Rigidity variable {E : Type} [NormedAddCommGroup E] [NormedSpace ℝ E] [CompleteSpace E] [FiniteDimensional ℝ E] local instance HolderLowerCompactLocal1 : NormedAddCommGroup (HolderSpace ℂ E ((1:ℝ)/3)) := inferInstance local instance HolderLowerCompactLocal2 : NormedSpace ℝ (HolderSpace ℂ E ((1:ℝ)/3)) := inferInstance local instance HolderLowerCompactLocal3 : NormedAddCommGroup (C1HolderSpace E ((1:ℝ)/3)) := inferInstance local instance HolderLowerCompactLocal4 : NormedSpace ℝ (C1HolderSpace E ((1:ℝ)/3)) := inferInstance theorem c1LowerOrderCLM_compact_holder (R : ℝ) (M : HolderSpace ℂ (E →L[ℝ] E) ((1:ℝ)/3)) (hs : ∀ z : ℂ, R<‖z‖ → holderValue ((1:ℝ)/3) M z=0) : IsCompactOperator (c1LowerOrderCLM M) := by let b : ContDiffBump (0:ℂ) := ⟨max R 0+1,max R 0+2,by positivity,by linarith⟩ let P : ℂ → E →L[ℝ] E := fun z => b z • ContinuousLinearMap.id ℝ E have hP : ContDiff ℝ ∞ P := b.contDiff.smul contDiff_const have hc : HasCompactSupport P := b.hasCompactSupport.smul_right let Q := compactSmoothHolder ((1:ℝ)/3) (by norm_num) (by norm_num) P hP hc obtain ⟨L,hL⟩ := ContDiff.lipschitzWith_of_hasCompactSupport hc hP (by simp) have hQ := c1LowerOrderCLM_compact (E := E) b.rOut Q (by intro z hz change b z • ContinuousLinearMap.id ℝ E=0 rw [b.zero_of_le_dist (by simpa using hz.le),zero_smul]) L hL have he : c1LowerOrderCLM M=(holderCLM ((1:ℝ)/3) M).comp (c1LowerOrderCLM Q) := by apply ContinuousLinearMap.ext intro u apply holderValue_injective ((1:ℝ)/3) apply BoundedContinuousFunction.ext intro z change holderValue ((1:ℝ)/3) M z (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) u) z)= holderValue ((1:ℝ)/3) M z (P z (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) u) z)) by_cases hz : ‖z‖≤R · have hb : b z=1 := b.one_of_mem_closedBall (by simp only [Metric.mem_closedBall,dist_zero_right] exact hz.trans ((le_max_left R 0).trans (by dsimp [b]; linarith))) simp only [P,hb,one_smul,ContinuousLinearMap.id_apply] · rw [hs z (lt_of_not_ge hz)] rfl rw [he] exact hQ.clm_comp (holderCLM ((1:ℝ)/3) M) end HigherDimensionalBallPacking.Rigidity open scoped ContDiff Topology BoundedContinuousFunction open Set Filter Function open SymplecticBallPacking.Hamiltonian namespace HigherDimensionalBallPacking.Rigidity open HigherDimensionalBallPacking.Rigidity local instance FrozenFrameLocal1 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] (α : ℝ) : NormedAddCommGroup (HolderSpace ℂ E α) := inferInstance local instance FrozenFrameLocal2 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] (α : ℝ) : NormedSpace ℝ (HolderSpace ℂ E α) := inferInstance local instance FrozenFrameLocal3 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] [CompleteSpace E] (α : ℝ) : NormedAddCommGroup (C1HolderSpace E α) := inferInstance local instance FrozenFrameLocal4 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] [CompleteSpace E] (α : ℝ) : NormedSpace ℝ (C1HolderSpace E α) := inferInstance local instance FrozenFrameLocal5 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] (R : ℝ) : NormedAddCommGroup (CompactHolderSpace E R) := inferInstance local instance FrozenFrameLocal6 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] (R : ℝ) : NormedSpace ℝ (CompactHolderSpace E R) := inferInstance theorem c1_decay_cauchy_representation {n : ℕ} (R : ℝ) (g : CompactHolderSpace (Phase n) R) {v : ℂ → Phase n} (hv : ContDiff ℝ 1 v) (hcurl : ∀ z, fderiv ℝ v z Complex.I-Complex.I • fderiv ℝ v z 1=compactHolderValue R g z) (hlim : Tendsto v (cocompact ℂ) (𝓝 0)) : v=compactCRInverseValue R g := by let w : ℂ → Phase n := fun z => v z-compactCRInverseValue R g z have hd : Differentiable ℂ w := by intro z have hvd := hv.differentiable one_ne_zero z have hgd := (compactCRInverse_contDiff R g).differentiable one_ne_zero z apply differentiableAt_complex_iff_differentiableAt_real.mpr refine ⟨hvd.sub hgd,?_⟩ change fderiv ℝ (v-_) z Complex.I=Complex.I • fderiv ℝ (v-_) z 1 rw [fderiv_sub hvd hgd] simp only [sub_apply,smul_sub] have h1 := hcurl z have h2 := compactCRInverse_rightInverse R g z exact sub_eq_sub_iff_sub_eq_sub.mp (h1.trans h2.symm) have hl : Tendsto w (cocompact ℂ) (𝓝 0) := by simpa only [sub_self] using hlim.sub (compactCRInverse_tendsto_zero R g) have he := hd.eq_const_of_tendsto_cocompact hl funext z exact sub_eq_zero.mp (congrFun he z) def unmarkedLower {n : ℕ} (R : ℝ) (M : HolderSpace ℂ (End n) ((1:ℝ)/3)) (hs : ∀ z : ℂ, R<‖z‖ → holderValue ((1:ℝ)/3) M z=0) : CompactHolderSpace (Phase n) R →L[ℝ] CompactHolderSpace (Phase n) R := ((c1LowerOrderCLM M).comp (compactCRInverse R)).codRestrict (compactHolderSubmodule R) (by intro g z hz change holderValue ((1:ℝ)/3) M z (compactCRInverseValue R g z)=0 rw [hs z hz,zero_apply]) @[simp] theorem unmarkedLower_value {n : ℕ} (R : ℝ) (M : HolderSpace ℂ (End n) ((1:ℝ)/3)) (hs : ∀ z : ℂ, R<‖z‖ → holderValue ((1:ℝ)/3) M z=0) (g : CompactHolderSpace (Phase n) R) (z : ℂ) : compactHolderValue R (unmarkedLower R M hs g) z= holderValue ((1:ℝ)/3) M z (compactCRInverseValue R g z) := rfl theorem unmarkedLower_compact {n : ℕ} (R : ℝ) (M : HolderSpace ℂ (End n) ((1:ℝ)/3)) (hs : ∀ z : ℂ, R<‖z‖ → holderValue ((1:ℝ)/3) M z=0) : IsCompactOperator (unmarkedLower R M hs) := ((c1LowerOrderCLM_compact_holder R M hs).comp_clm _).codRestrict _ (compactHolderSubmodule_isClosed R) def c1StandardCurl {n : ℕ} : C1HolderSpace (Phase n) ((1:ℝ)/3) →L[ℝ] HolderSpace ℂ (Phase n) ((1:ℝ)/3) := (holderJetEval (E := Phase n) ((1:ℝ)/3) Complex.I).comp (c1HolderDeriv ((1:ℝ)/3))- (holderMap ((1:ℝ)/3) (standardJ n)).comp ((holderJetEval (E := Phase n) ((1:ℝ)/3) 1).comp (c1HolderDeriv ((1:ℝ)/3))) theorem c1StandardCurl_value {n : ℕ} (u : C1HolderSpace (Phase n) ((1:ℝ)/3)) (z : ℂ) : holderValue ((1:ℝ)/3) (c1StandardCurl u) z = fderiv ℝ (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) u)) z Complex.I- Complex.I • fderiv ℝ (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) u)) z 1 := by rw [(c1Holder_hasFDerivAt ((1:ℝ)/3) u z).fderiv] rfl theorem frame_product_CR {n : ℕ} {a : ℂ → End n} {v : ℂ → Phase n} {z : ℂ} (ha : DifferentiableAt ℝ a z) (hv : DifferentiableAt ℝ v z) (K M : End n) (hint : ∀ x, a z (Complex.I • x)=K (a z x)) (hM : ∀ x, fderiv ℝ a z Complex.I x-K (fderiv ℝ a z 1 x)=a z (M x)) : fderiv ℝ (fun w => a w (v w)) z Complex.I- K (fderiv ℝ (fun w => a w (v w)) z 1)= a z (fderiv ℝ v z Complex.I-Complex.I • fderiv ℝ v z 1+M (v z)) := by have hd (w : ℂ) : fderiv ℝ (fun w => a w (v w)) z w= a z (fderiv ℝ v z w)+fderiv ℝ a z w (v z) := by rw [fderiv_clm_apply ha hv] rfl rw [hd Complex.I,hd 1,map_add,←hint (fderiv ℝ v z 1),map_add,map_sub] calc _ = (a z (fderiv ℝ v z Complex.I)-a z (Complex.I • fderiv ℝ v z 1))+ (fderiv ℝ a z Complex.I (v z)-K (fderiv ℝ a z 1 (v z))) := by abel _ = _ := by rw [hM] end HigherDimensionalBallPacking.Rigidity open scoped ContDiff Topology BoundedContinuousFunction open Set Filter Function open SymplecticBallPacking.Hamiltonian namespace HigherDimensionalBallPacking.Rigidity open HigherDimensionalBallPacking.Rigidity local instance FrozenSurjectiveLocal1 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] (α : ℝ) : NormedAddCommGroup (HolderSpace ℂ E α) := inferInstance local instance FrozenSurjectiveLocal2 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] (α : ℝ) : NormedSpace ℝ (HolderSpace ℂ E α) := inferInstance local instance FrozenSurjectiveLocal3 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] [CompleteSpace E] (α : ℝ) : NormedAddCommGroup (C1HolderSpace E α) := inferInstance local instance FrozenSurjectiveLocal4 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] [CompleteSpace E] (α : ℝ) : NormedSpace ℝ (C1HolderSpace E α) := inferInstance local instance FrozenSurjectiveLocal5 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] (R : ℝ) : NormedAddCommGroup (CompactHolderSpace E R) := inferInstance local instance FrozenSurjectiveLocal6 (E : Type) [NormedAddCommGroup E] [NormedSpace ℝ E] (R : ℝ) : NormedSpace ℝ (CompactHolderSpace E R) := inferInstance theorem c1_framed_decaying_kernel {n : ℕ} (R : ℝ) (K a M : ℂ → End n) (hK : ∀ z, Compatible (K z)) (hKout : ∀ z : ℂ, R<‖z‖ → K z=standardJ n) (ha : ContDiff ℝ 1 a) (v : ℂ → Phase n) (hv : ContDiff ℝ 1 v) (hAout : ∀ z : ℂ, R<‖z‖ → a z=ContinuousLinearMap.id ℝ _) (hAinj : ∀ z, Injective (a z)) (hint : ∀ z x, a z (Complex.I • x)=K z (a z x)) (hM : ∀ z x, fderiv ℝ a z Complex.I x-K z (fderiv ℝ a z 1 x)=a z (M z x)) (hzero : ∀ z, fderiv ℝ v z Complex.I-Complex.I • fderiv ℝ v z 1+M z (v z)=0) (hvlim : Tendsto v (cocompact ℂ) (𝓝 0)) : v=0 := by let u : ℂ → Phase n := fun z => a z (v z) have hu : ContDiff ℝ 1 u := ha.clm_apply hv have hCR (z : ℂ) : fderiv ℝ u z Complex.I=K z (fderiv ℝ u z 1) := by apply sub_eq_zero.mp have hh := frame_product_CR (ha.differentiable one_ne_zero z) (hv.differentiable one_ne_zero z) (K z) (M z) (hint z) (hM z) change fderiv ℝ u z Complex.I-K z (fderiv ℝ u z 1)=_ at hh rw [hh,hzero z,map_zero] have hlim : Tendsto u (cocompact ℂ) (𝓝 0) := by apply hvlim.congr' filter_upwards [(isCompact_closedBall (0:ℂ) R).compl_mem_cocompact] with z hz have hzR : R<‖z‖ := by simpa only [mem_compl_iff,Metric.mem_closedBall,dist_zero_right,not_le] using hz change v z=a z (v z) rw [hAout z hzR,ContinuousLinearMap.id_apply] have hholo : ∀ᶠ z in cocompact ℂ, DifferentiableAt ℂ u z := by filter_upwards [(isCompact_closedBall (0:ℂ) R).compl_mem_cocompact] with z hz have hzR : R<‖z‖ := by simpa only [mem_compl_iff,Metric.mem_closedBall,dist_zero_right,not_le] using hz apply differentiableAt_complex_iff_differentiableAt_real.mpr refine ⟨hu.differentiable one_ne_zero z,?_⟩ have hh := hCR z rw [hKout z hzR] at hh exact hh have hu0 := c1_decaying_CR_zero K hK hu hCR hholo hlim funext z apply hAinj z change u z=a z 0 rw [congrFun hu0 z,map_zero] rfl theorem framed_unmarked_surjective {n : ℕ} (R : ℝ) (K : ℂ → End n) (hK : ∀ z, Compatible (K z)) (hKout : ∀ z : ℂ, R<‖z‖ → K z=standardJ n) (A : C1HolderSpace (End n) ((1:ℝ)/3)) (M : HolderSpace ℂ (End n) ((1:ℝ)/3)) (hs : ∀ z : ℂ, R<‖z‖ → holderValue ((1:ℝ)/3) M z=0) (hAout : ∀ z : ℂ, R<‖z‖ → holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) A) z=ContinuousLinearMap.id ℝ _) (hAinj : ∀ z, Injective (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) A) z)) (hint : ∀ z x, holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) A) z (Complex.I • x)= K z (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) A) z x)) (hM : ∀ z x, fderiv ℝ (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) A)) z Complex.I x- K z (fderiv ℝ (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) A)) z 1 x)= holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) A) z (holderValue ((1:ℝ)/3) M z x)) : Surjective (fun g : CompactHolderSpace (Phase n) R => g+unmarkedLower R M hs g) := by apply (compactPerturbation_injective_iff_surjective _ (unmarkedLower_compact R M hs)).mp apply (LinearMap.ker_eq_bot (f := (ContinuousLinearMap.id ℝ (CompactHolderSpace (Phase n) R)+unmarkedLower R M hs).toLinearMap)).mp apply LinearMap.ker_eq_bot'.mpr intro g hg change g+unmarkedLower R M hs g=0 at hg have hzero (z : ℂ) : compactHolderValue R g z+holderValue ((1:ℝ)/3) M z (compactCRInverseValue R g z)=0 := congrArg (fun g => compactHolderValue R g z) hg have hg0 := c1_framed_decaying_kernel R K (holderValue ((1:ℝ)/3) (c1HolderValue ((1:ℝ)/3) A)) (holderValue ((1:ℝ)/3) M) hK hKout (c1Holder_contDiff _ A) (compactCRInverseValue R g) (compactCRInverse_contDiff R g) hAout hAinj hint hM (fun z => by rw [compactCRInverse_rightInverse R g z]; exact hzero z) (compactCRInverse_tendsto_zero R g) apply Subtype.ext apply holderValue_injective ((1:ℝ)/3) apply BoundedContinuousFunction.ext intro z have hh := compactCRInverse_rightInverse R g z rw [hg0] at hh simpa using hh.symm end HigherDimensionalBallPacking.Rigidity end end OAI