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| import Mathlib | |
| import OAI.RepresentationTheory.VertexAlgebra.HilbertCore | |
| namespace OAI | |
| /-! Vertex algebra, energy bounds and closed smeared-field operators. -/ | |
| noncomputable section | |
| namespace StronglyRationalVOA | |
| universe u v | |
| open Filter | |
| open scoped ContDiff | |
| section GraphData | |
| variable {H : Type u} [NormedAddCommGroup H] [InnerProductSpace ℂ H] [CompleteSpace H] | |
| namespace ClosedGraphData | |
| theorem entry_commutes_of_graph_invariant | |
| (T : H →ₗ.[ℂ] H) (hT : T.IsClosed) (Q : H →L[ℂ] H) | |
| (hQ : ∀ x y : H, (x,y) ∈ T.graph → (Q x,Q y) ∈ T.graph) | |
| (hQa : ∀ x y : H, (x,y) ∈ T.graph → (Q.adjoint x,Q.adjoint y) ∈ T.graph) | |
| (i j : Bool) : Q * entry T hT i j = entry T hT i j * Q := by | |
| have hinv : ∀ z ∈ graph T, diagonalAction Q z ∈ graph T := by | |
| intro z hz | |
| exact hQ _ _ hz | |
| have hinva : ∀ z ∈ graph T, (diagonalAction Q).adjoint z ∈ graph T := by | |
| rw [diagonalAction_adj] | |
| intro z hz | |
| exact hQa _ _ hz | |
| let : IsClosed (graph T : Set (Double H)) := graph_closed hT | |
| have hP : (diagonalAction Q).comp (projection T hT) = | |
| (projection T hT).comp (diagonalAction Q) := | |
| commutes_projection_of_reduces (graph T) (diagonalAction Q) hinv hinva | |
| change Q.comp (entry T hT i j) = (entry T hT i j).comp Q | |
| have hc : Q.comp (coordinate i) = (coordinate i).comp (diagonalAction Q) := | |
| (coordinate_diagonalAction Q i).symm | |
| calc | |
| Q.comp (entry T hT i j) = | |
| ((coordinate i).comp (diagonalAction Q)).comp ((projection T hT).comp (inclusion j)) := by | |
| rw [← hc]; rfl | |
| _ = (coordinate i).comp (((projection T hT).comp (diagonalAction Q)).comp (inclusion j)) := by | |
| simpa only [ContinuousLinearMap.comp_assoc] using | |
| congrArg (fun R => (coordinate i).comp (R.comp (inclusion j))) hP | |
| _ = (entry T hT i j).comp Q := by | |
| simp only [ContinuousLinearMap.comp_assoc, diagonalAction_inclusion, entry] | |
| end ClosedGraphData | |
| namespace LocalOperatorAlgebra | |
| open scoped Pointwise | |
| def generated (s : Set (H →L[ℂ] H)) : VonNeumannAlgebra H where | |
| toStarSubalgebra := StarSubalgebra.centralizer ℂ (StarSubalgebra.centralizer ℂ s : Set (H →L[ℂ] H)) | |
| centralizer_centralizer' := by | |
| change Set.centralizer (Set.centralizer | |
| (StarSubalgebra.centralizer ℂ (StarSubalgebra.centralizer ℂ s : Set (H →L[ℂ] H)) : Set (H →L[ℂ] H))) = | |
| (StarSubalgebra.centralizer ℂ (StarSubalgebra.centralizer ℂ s : Set (H →L[ℂ] H)) : Set (H →L[ℂ] H)) | |
| rw [StarSubalgebra.coe_centralizer_centralizer] | |
| rw [Set.centralizer_centralizer_centralizer] | |
| theorem subset_generated (s : Set (H →L[ℂ] H)) : s ⊆ generated s := by | |
| intro x hx | |
| exact StarAlgebra.adjoin_le_centralizer_centralizer ℂ s | |
| (StarAlgebra.subset_adjoin ℂ s hx) | |
| theorem generated_mono {s t : Set (H →L[ℂ] H)} (hst : s ⊆ t) : | |
| generated s ≤ generated t := | |
| StarSubalgebra.centralizer_le _ _ _ (StarSubalgebra.centralizer_le _ _ _ hst) | |
| theorem generated_le {s : Set (H →L[ℂ] H)} {M : VonNeumannAlgebra H} | |
| (h : s ⊆ M) : generated s ≤ M := by | |
| have hle := StarSubalgebra.centralizer_le ℂ _ _ (StarSubalgebra.centralizer_le ℂ _ _ h) | |
| change (StarSubalgebra.centralizer ℂ (StarSubalgebra.centralizer ℂ s : Set (H →L[ℂ] H)) : Set (H →L[ℂ] H)) ⊆ _ | |
| change (StarSubalgebra.centralizer ℂ (StarSubalgebra.centralizer ℂ s : Set (H →L[ℂ] H)) : Set (H →L[ℂ] H)) ⊆ | |
| (StarSubalgebra.centralizer ℂ (StarSubalgebra.centralizer ℂ (M : Set (H →L[ℂ] H)) : Set (H →L[ℂ] H)) : Set (H →L[ℂ] H)) at hle | |
| simpa only [StarSubalgebra.coe_centralizer_centralizer, | |
| StarMemClass.star_coe_eq, Set.union_self, M.centralizer_centralizer] using hle | |
| @[simp] | |
| theorem coe_generated_commutant (s : Set (H →L[ℂ] H)) : | |
| ((generated s).commutant : Set (H →L[ℂ] H)) = (s ∪ star s).centralizer := by | |
| rw [VonNeumannAlgebra.coe_commutant] | |
| change Set.centralizer (StarSubalgebra.centralizer ℂ | |
| (StarSubalgebra.centralizer ℂ s : Set (H →L[ℂ] H)) : Set (H →L[ℂ] H)) = _ | |
| rw [StarSubalgebra.coe_centralizer_centralizer, | |
| Set.centralizer_centralizer_centralizer] | |
| theorem generated_le_commutant_iff (s t : Set (H →L[ℂ] H)) : | |
| generated s ≤ (generated t).commutant ↔ | |
| ∀ x ∈ s, ∀ y ∈ t, y*x = x*y ∧ star y*x = x*star y := by | |
| constructor | |
| · intro h x hx y hy | |
| have hmem := h (subset_generated s hx) | |
| rw [← SetLike.mem_coe, coe_generated_commutant] at hmem | |
| exact ⟨hmem y (Set.mem_union_left _ hy), | |
| hmem (star y) (Set.mem_union_right _ (by simpa using hy))⟩ | |
| · intro h | |
| apply generated_le | |
| intro x hx | |
| rw [coe_generated_commutant] | |
| rintro y (hy | hy) | |
| · exact (h x hx y hy).1 | |
| · have hy' : star y ∈ t := hy | |
| simpa using (h x hx (star y) hy').2 | |
| end LocalOperatorAlgebra | |
| end GraphData | |
| namespace SmoothCircleFunction | |
| def onCircle (f : SmoothCircleFunction) : AddCircle (2*Real.pi) → ℂ := | |
| f.periodic.lift | |
| @[simp] | |
| theorem onCircle_coe (f : SmoothCircleFunction) (t : ℝ) : | |
| f.onCircle (t : AddCircle (2*Real.pi)) = f.toFun t := rfl | |
| end SmoothCircleFunction | |
| structure ProperCircleArc where | |
| left : ℝ | |
| right : ℝ | |
| nonempty' : left < right | |
| nondense' : right < left + 2*Real.pi | |
| namespace ProperCircleArc | |
| def carrier (I : ProperCircleArc) : Set (AddCircle (2*Real.pi)) := | |
| (fun t : ℝ => (t : AddCircle (2*Real.pi))) '' Set.Ioo I.left I.right | |
| def complement (I : ProperCircleArc) : ProperCircleArc where | |
| left := I.right | |
| right := I.left + 2*Real.pi | |
| nonempty' := I.nondense' | |
| nondense' := by linarith [I.nonempty'] | |
| end ProperCircleArc | |
| namespace CFTTypeVOA.UnitaryStructure | |
| open UniformSpace | |
| variable {V : Type u} [NormedAddCommGroup V] [InnerProductSpace ℂ V] | |
| {A : CFTTypeVOA V} (U : A.UnitaryStructure) | |
| def localGraphData (hc : A.toVertexAlgebra.C2Cofinite) | |
| (O : Set (AddCircle (2*Real.pi))) : Set (Completion V →L[ℂ] Completion V) := | |
| {x | ∃ (a : V) (d : ℕ) (ha : a ∈ A.grade d) (f : SmoothCircleFunction), | |
| tsupport f.onCircle ⊆ O ∧ ∃ i j : Bool, | |
| x = ClosedGraphData.entry (U.closedSmoothField hc a d f) | |
| (U.closedSmoothField_isClosed hc ha f) i j} | |
| def localAlgebra (hc : A.toVertexAlgebra.C2Cofinite) | |
| (O : Set (AddCircle (2*Real.pi))) : VonNeumannAlgebra (Completion V) := | |
| LocalOperatorAlgebra.generated (U.localGraphData hc O) | |
| def intervalAlgebra (hc : A.toVertexAlgebra.C2Cofinite) | |
| (I : ProperCircleArc) : VonNeumannAlgebra (Completion V) := | |
| U.localAlgebra hc I.carrier | |
| def CKLWStrongLocal (hc : A.toVertexAlgebra.C2Cofinite) : Prop := | |
| (∀ a : V, A.PolynomialEnergyBound a) ∧ | |
| ∀ I : ProperCircleArc, U.intervalAlgebra hc I ≤ | |
| (U.intervalAlgebra hc I.complement).commutant | |
| theorem localAlgebra_isotone (hc : A.toVertexAlgebra.C2Cofinite) | |
| {O P : Set (AddCircle (2*Real.pi))} (hOP : O ⊆ P) : | |
| U.localAlgebra hc O ≤ U.localAlgebra hc P := by | |
| apply LocalOperatorAlgebra.generated_mono | |
| rintro x ⟨a,d,ha,f,hf,i,j,rfl⟩ | |
| exact ⟨a,d,ha,f,hf.trans hOP,i,j,rfl⟩ | |
| theorem closedSmoothField_graphData_mem (hc : A.toVertexAlgebra.C2Cofinite) | |
| {a : V} {d : ℕ} (ha : a ∈ A.grade d) (f : SmoothCircleFunction) | |
| {O : Set (AddCircle (2*Real.pi))} (hf : tsupport f.onCircle ⊆ O) (i j : Bool) : | |
| ClosedGraphData.entry (U.closedSmoothField hc a d f) | |
| (U.closedSmoothField_isClosed hc ha f) i j ∈ U.localAlgebra hc O := | |
| LocalOperatorAlgebra.subset_generated _ ⟨a,d,ha,f,hf,i,j,rfl⟩ | |
| theorem CKLWStrongLocal_iff_graphData (hc : A.toVertexAlgebra.C2Cofinite) : | |
| U.CKLWStrongLocal hc ↔ | |
| ∀ I : ProperCircleArc, ∀ x ∈ U.localGraphData hc I.carrier, | |
| ∀ y ∈ U.localGraphData hc I.complement.carrier, y*x=x*y := by | |
| constructor | |
| · intro h I x hx y hy | |
| exact ((LocalOperatorAlgebra.generated_le_commutant_iff _ _).mp (h.2 I) x hx y hy).1 | |
| · intro h | |
| refine ⟨U.polynomialEnergyBounds hc, fun I => ?_⟩ | |
| apply (LocalOperatorAlgebra.generated_le_commutant_iff _ _).mpr | |
| intro x hx y hy | |
| refine ⟨h I x hx y hy, ?_⟩ | |
| apply h I x hx (star y) | |
| obtain ⟨a,d,ha,f,hf,i,j,rfl⟩ := hy | |
| exact ⟨a,d,ha,f,hf,j,i,ClosedGraphData.star_entry _ _ i j⟩ | |
| end CFTTypeVOA.UnitaryStructure | |
| namespace CFTTypeVOA.UnitaryStructure | |
| open UniformSpace | |
| variable {V : Type u} [NormedAddCommGroup V] [InnerProductSpace ℂ V] | |
| {A : CFTTypeVOA V} (U : A.UnitaryStructure) | |
| def gradeEmbedding (d : ℕ) : A.grade d →ₗᵢ[ℂ] Completion V := | |
| (Completion.toComplₗᵢ : V →ₗᵢ[ℂ] Completion V).comp (A.grade d).subtypeₗᵢ | |
| include U in | |
| theorem completed_grades_orthogonal : | |
| OrthogonalFamily ℂ (fun d => A.grade d) (fun d => gradeEmbedding (A := A) d) := by | |
| intro d e hde a b | |
| change inner ℂ ((Completion.toComplₗᵢ : V →ₗᵢ[ℂ] Completion V) a.val) | |
| ((Completion.toComplₗᵢ : V →ₗᵢ[ℂ] Completion V) b.val) = 0 | |
| rw [LinearIsometry.inner_map_map] | |
| exact U.grades_orthogonal hde a.property b.property | |
| include U in | |
| theorem completed_isHilbertSum : | |
| IsHilbertSum ℂ (fun d => A.grade d) (fun d => gradeEmbedding (A := A) d) := by | |
| classical | |
| let : ∀ d, FiniteDimensional ℂ (A.grade d) := A.grade_finite | |
| apply IsHilbertSum.mk U.completed_grades_orthogonal | |
| let S := ⨆ d, LinearMap.range (gradeEmbedding (A := A) d).toLinearMap | |
| have hcore : HilbertCore.space V ≤ S := by | |
| rintro _ ⟨a, rfl⟩ | |
| rw [← A.sum_gradeComponents a, map_sum] | |
| apply Submodule.sum_mem | |
| intro d _ | |
| apply Submodule.mem_iSup_of_mem d | |
| exact ⟨⟨A.gradeComponent d a, A.gradeComponent_mem d a⟩, rfl⟩ | |
| have hd : Dense (S : Set (Completion V)) := HilbertCore.dense.mono hcore | |
| exact le_of_eq (Submodule.dense_iff_topologicalClosure_eq_top.mp hd).symm | |
| def energyCoordinates : Completion V ≃ₗᵢ[ℂ] lp (fun d => A.grade d) 2 := | |
| U.completed_isHilbertSum.linearIsometryEquiv | |
| @[simp] | |
| theorem energyCoordinates_grade {d : ℕ} (a : A.grade d) : | |
| U.energyCoordinates (a.val : Completion V) = lp.single 2 d a := by | |
| apply U.energyCoordinates.symm.injective | |
| rw [LinearIsometryEquiv.symm_apply_apply] | |
| exact (U.completed_isHilbertSum.linearIsometryEquiv_symm_apply_single a).symm | |
| theorem energyCoordinates_coe (a : V) (d : ℕ) : | |
| (U.energyCoordinates (a : Completion V) d).val = A.gradeComponent d a := by | |
| apply A.homogeneous_induction (P := fun a => | |
| (U.energyCoordinates (a : Completion V) d).val = A.gradeComponent d a) | |
| · change (U.energyCoordinates ((Completion.toComplₗᵢ : V →ₗᵢ[ℂ] Completion V) 0) d).val = _ | |
| rw [map_zero, map_zero] | |
| simp only [map_zero, lp.coeFn_zero, Pi.zero_apply, Submodule.coe_zero] | |
| · intro e b hb | |
| rw [energyCoordinates_grade U ⟨b,hb⟩] | |
| by_cases hed : e = d | |
| · subst e | |
| simp [A.gradeComponent_of_mem hb] | |
| · simp [lp.single_apply, Ne.symm hed, A.gradeComponent_of_mem_ne hed hb] | |
| · intro b c hb hc | |
| change (U.energyCoordinates ((Completion.toComplₗᵢ : V →ₗᵢ[ℂ] Completion V) (b+c)) d).val = _ | |
| simp only [map_add, lp.coeFn_add, Pi.add_apply, Submodule.coe_add] | |
| change (U.energyCoordinates (b : Completion V) d).val + | |
| (U.energyCoordinates (c : Completion V) d).val = _ | |
| rw [hb,hc] | |
| end CFTTypeVOA.UnitaryStructure | |
| open scoped ENNReal | |
| namespace HilbertScale | |
| variable {ι : Type*} {G : ι → Type u} [∀ i, NormedAddCommGroup (G i)] | |
| [∀ i, InnerProductSpace ℂ (G i)] | |
| abbrev Space (G : ι → Type u) [∀ i, NormedAddCommGroup (G i)] := lp G 2 | |
| def domain (w : ι → ℂ) : Submodule ℂ (Space G) where | |
| carrier := {x | Memℓp (fun i => w i • x i) 2} | |
| zero_mem' := by | |
| change Memℓp (fun i => w i • (0 : G i)) 2 | |
| simpa only [smul_zero] using (zero_mem_ℓp' (E := G) (p := 2)) | |
| add_mem' := by | |
| intro x y hx hy | |
| change Memℓp (fun i => w i • (x i + y i)) 2 | |
| convert hx.add hy using 1 | |
| ext i | |
| exact smul_add _ _ _ | |
| smul_mem' := by | |
| intro c x hx | |
| change Memℓp (fun i => w i • (c • x i)) 2 | |
| convert hx.const_smul c using 1 | |
| ext i | |
| exact smul_comm _ _ _ | |
| def diagonal (w : ι → ℂ) : Space G →ₗ.[ℂ] Space G where | |
| domain := domain w | |
| toFun := | |
| { toFun := fun x => ⟨fun i => w i • x.val i, x.property⟩ | |
| map_add' := by | |
| intro x y; ext i | |
| change w i • (x.val i + y.val i) = w i • x.val i + w i • y.val i | |
| exact smul_add _ _ _ | |
| map_smul' := by intro c x; ext i; simp [smul_smul, mul_comm] } | |
| @[simp] | |
| theorem diagonal_apply (w : ι → ℂ) (x : (diagonal (G := G) w).domain) (i : ι) : | |
| diagonal w x i = w i • x.val i := rfl | |
| theorem mem_graph_iff (w : ι → ℂ) (x y : Space G) : | |
| (x,y) ∈ (diagonal w).graph ↔ ∀ i, y i = w i • x i := by | |
| constructor | |
| · intro hz i | |
| obtain ⟨z,hz,hzw⟩ := (diagonal w).mem_graph_iff.mp hz | |
| have h1 : (z : Space G) = x := hz | |
| have h2 : diagonal w z = y := hzw | |
| have hi := congrArg (fun v : Space G => v i) h2 | |
| change w i • (z : Space G) i = y i at hi | |
| rw [h1] at hi | |
| exact hi.symm | |
| · intro h | |
| have hd : x ∈ domain w := by | |
| change Memℓp (fun i => w i • x i) 2 | |
| convert lp.memℓp y using 1 | |
| ext i; exact (h i).symm | |
| exact (diagonal w).mem_graph_iff.mpr ⟨⟨x,hd⟩,rfl,by ext i; exact (h i).symm⟩ | |
| theorem diagonal_closed (w : ι → ℂ) : (diagonal (G := G) w).IsClosed := by | |
| have heq : ((diagonal (G := G) w).graph : Set (Space G × Space G)) = | |
| ⋂ i, {z : Space G × Space G | z.2 i = w i • z.1 i} := by | |
| ext z; simp only [Set.mem_iInter, Set.mem_ofPred_eq] | |
| exact mem_graph_iff w z.1 z.2 | |
| rw [LinearPMap.IsClosed, heq] | |
| apply isClosed_iInter | |
| intro i | |
| exact isClosed_eq ((lp.evalCLM ℂ G 2 i).continuous.comp continuous_snd) | |
| (((lp.evalCLM ℂ G 2 i).continuous.comp continuous_fst).const_smul (w i)) | |
| variable [DecidableEq ι] | |
| theorem single_mem_domain (w : ι → ℂ) (i : ι) (v : G i) : | |
| lp.single 2 i v ∈ domain w := by | |
| change Memℓp _ 2 | |
| have heq : (fun j => w j • lp.single 2 i v j) = (lp.single 2 i (w i • v) : ∀ j, G j) := by | |
| ext j; by_cases h : j = i | |
| · subst h; simp | |
| · simp [lp.single_apply, h] | |
| rw [heq] | |
| exact lp.memℓp _ | |
| theorem diagonal_single (w : ι → ℂ) (i : ι) (v : G i) : | |
| diagonal w ⟨lp.single 2 i v, single_mem_domain w i v⟩ = lp.single 2 i (w i • v) := by | |
| ext j; by_cases h : j = i | |
| · subst h; simp | |
| · simp [lp.single_apply, h] | |
| theorem domain_dense (w : ι → ℂ) : Dense (domain (G := G) w : Set (Space G)) := by | |
| intro x | |
| apply mem_closure_of_tendsto (lp.hasSum_single (by norm_num : (2 : ℝ≥0∞) ≠ ⊤) x) | |
| apply Filter.Eventually.of_forall | |
| intro s | |
| exact Submodule.sum_mem _ (fun i _ => single_mem_domain w i (x i)) | |
| variable [∀ i, CompleteSpace (G i)] | |
| omit [DecidableEq ι] [∀ i, CompleteSpace (G i)] in | |
| theorem diagonal_formalAdjoint (w : ι → ℂ) : | |
| (diagonal (G := G) w).IsFormalAdjoint (diagonal (fun i => star (w i))) := by | |
| intro x y | |
| rw [← (lp.hasSum_inner (diagonal w x) (y : Space G)).tsum_eq, | |
| ← (lp.hasSum_inner (x : Space G) (diagonal (fun i => star (w i)) y)).tsum_eq] | |
| apply tsum_congr | |
| intro i | |
| simp only [diagonal_apply, inner_smul_left, inner_smul_right, starRingEnd_apply] | |
| theorem adjoint_coordinate (w : ι → ℂ) (y : (diagonal (G := G) w).adjoint.domain) | |
| (i : ι) : (diagonal (G := G) w).adjoint y i = star (w i) • (y : Space G) i := by | |
| apply ext_inner_right ℂ | |
| intro v | |
| have h : inner ℂ ((diagonal (G := G) w).adjoint y) (lp.single 2 i v) = | |
| inner ℂ (y : Space G) (lp.single 2 i (w i • v)) := by | |
| have hh := (LinearPMap.adjoint_isFormalAdjoint (domain_dense (G := G) w)) y | |
| ⟨lp.single 2 i v, single_mem_domain (G := G) w i v⟩ | |
| rw [diagonal_single] at hh | |
| exact hh | |
| rw [lp.inner_single_right, lp.inner_single_right] at h | |
| simpa only [inner_smul_right, inner_smul_left, star_star, starRingEnd_apply] using h | |
| theorem adjoint_le_diagonal (w : ι → ℂ) : | |
| (diagonal (G := G) w).adjoint ≤ diagonal (G := G) (fun i => star (w i)) := by | |
| apply LinearPMap.le_graph_iff.mp | |
| intro z hz | |
| obtain ⟨y,hy,hTy⟩ := ((diagonal (G := G) w).adjoint).mem_graph_iff.mp hz | |
| apply (mem_graph_iff (G := G) _ _ _).mpr | |
| intro i | |
| have h1 : (y : Space G) = z.1 := hy | |
| have h2 : (diagonal (G := G) w).adjoint y = z.2 := hTy | |
| have hi := adjoint_coordinate w y i | |
| rw [h1, h2] at hi | |
| exact hi | |
| theorem adjoint_diagonal (w : ι → ℂ) : | |
| (diagonal (G := G) w).adjoint = diagonal (fun i => star (w i)) := by | |
| apply le_antisymm (adjoint_le_diagonal w) | |
| have hf : (diagonal (G := G) w).IsFormalAdjoint (diagonal (fun i => star (w i))) := | |
| diagonal_formalAdjoint w | |
| exact hf.le_adjoint (domain_dense w) | |
| def finiteCore : Submodule ℂ (Space G) := | |
| Submodule.span ℂ {x | ∃ i v, x = lp.single 2 i v} | |
| omit [∀ i, CompleteSpace (G i)] in | |
| theorem single_mem_finiteCore (i : ι) (v : G i) : | |
| lp.single 2 i v ∈ finiteCore (G := G) := | |
| Submodule.subset_span ⟨i,v,rfl⟩ | |
| omit [∀ i, CompleteSpace (G i)] in | |
| theorem finiteCore_le_domain (w : ι → ℂ) : finiteCore (G := G) ≤ domain w := by | |
| apply Submodule.span_le.mpr | |
| rintro _ ⟨i,v,rfl⟩ | |
| exact single_mem_domain w i v | |
| omit [∀ i, CompleteSpace (G i)] in | |
| theorem diagonal_hasCore (w : ι → ℂ) : | |
| (diagonal (G := G) w).HasCore finiteCore := by | |
| let T := (diagonal (G := G) w).domRestrict finiteCore | |
| have hT : T.IsClosable := (diagonal_closed w).isClosable.leIsClosable | |
| LinearPMap.domRestrict_le | |
| refine ⟨finiteCore_le_domain w, ?_⟩ | |
| apply LinearPMap.eq_of_eq_graph | |
| rw [← hT.graph_closure_eq_closure_graph] | |
| apply le_antisymm | |
| · exact Submodule.topologicalClosure_minimal _ | |
| (LinearPMap.le_graph_of_le LinearPMap.domRestrict_le) (diagonal_closed w) | |
| · intro z hz | |
| have hzy := (mem_graph_iff w z.1 z.2).mp hz | |
| have hs := (lp.hasSum_single (by norm_num : (2 : ℝ≥0∞) ≠ ⊤) z.1).prodMk | |
| (lp.hasSum_single (by norm_num : (2 : ℝ≥0∞) ≠ ⊤) z.2) | |
| apply mem_closure_of_tendsto hs | |
| apply Filter.Eventually.of_forall | |
| intro s | |
| apply Submodule.sum_mem | |
| intro i _ | |
| apply T.mem_graph_iff.mpr | |
| have hdom : lp.single 2 i (z.1 i) ∈ T.domain := | |
| ⟨single_mem_finiteCore _ _, single_mem_domain _ _ _⟩ | |
| refine ⟨⟨_,hdom⟩,rfl,?_⟩ | |
| change diagonal w ⟨lp.single 2 i (z.1 i),single_mem_domain _ _ _⟩ = _ | |
| rw [diagonal_single, ← hzy i] | |
| theorem real_diagonal_selfAdjoint (w : ι → ℝ) : | |
| (diagonal (G := G) (fun i => (w i : ℂ))).adjoint = diagonal (fun i => (w i : ℂ)) := by | |
| rw [adjoint_diagonal] | |
| simp only [Complex.star_def, Complex.conj_ofReal] | |
| end HilbertScale | |
| namespace OperatorTransport | |
| variable {H : Type u} {K : Type v} | |
| [NormedAddCommGroup H] [InnerProductSpace ℂ H] | |
| [NormedAddCommGroup K] [InnerProductSpace ℂ K] | |
| def transport (E : H ≃ₗᵢ[ℂ] K) (T : K →ₗ.[ℂ] K) : H →ₗ.[ℂ] H where | |
| domain := T.domain.comap E.toLinearEquiv.toLinearMap | |
| toFun := | |
| { toFun := fun x => E.symm (T ⟨E x.val, x.property⟩) | |
| map_add' := by | |
| intro x y | |
| simp only [Submodule.coe_add,map_add] | |
| change E.symm (T (⟨E x.val,x.property⟩ + ⟨E y.val,y.property⟩)) = _ | |
| rw [T.map_add,map_add] | |
| map_smul' := by | |
| intro c x | |
| simp only [Submodule.coe_smul,map_smul] | |
| change E.symm (T (c • (⟨E x.val,x.property⟩ : T.domain))) = _ | |
| rw [T.map_smul,map_smul] | |
| rfl } | |
| theorem mem_graph_iff (E : H ≃ₗᵢ[ℂ] K) (T : K →ₗ.[ℂ] K) (x y : H) : | |
| (x,y) ∈ (transport E T).graph ↔ (E x, E y) ∈ T.graph := by | |
| rw [(transport E T).mem_graph_iff, T.mem_graph_iff] | |
| constructor | |
| · rintro ⟨z,hz,hzy⟩ | |
| dsimp only [Prod.fst,Prod.snd] at hz hzy ⊢ | |
| have hmem : E z.val ∈ T.domain := z.property | |
| refine ⟨⟨E z.val,hmem⟩,congrArg E hz,?_⟩ | |
| rw [← hzy] | |
| exact (E.apply_symm_apply _).symm | |
| · rintro ⟨z,hz,hzy⟩ | |
| dsimp only [Prod.fst,Prod.snd] at hz hzy ⊢ | |
| have hx : x ∈ (transport E T).domain := by | |
| change E x ∈ T.domain | |
| rw [← hz]; exact z.property | |
| refine ⟨⟨x,hx⟩,rfl,?_⟩ | |
| change E.symm (T ⟨E x,hx⟩) = y | |
| have hz' : (⟨E x,hx⟩ : T.domain) = z := Subtype.ext hz.symm | |
| rw [hz',hzy,E.symm_apply_apply] | |
| end OperatorTransport | |
| end StronglyRationalVOA | |
| end | |
| end OAI | |