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DerivedAlgGeo.CategoryTheory.Triangulated.StabilityCondition.Foundation.Deformation.PhaseConfinement

Owner phase confinement for perturbed semistable objects #

Cutoff triangles inside a thin old phase interval, together with rotated-charge signs, confine the intrinsic old phases of a perturbed-semistable object.

The intrinsic highest old phase of an owner perturbed-semistable object is at most its perturbed phase plus the deformation radius.

The intrinsic lowest old phase of an owner perturbed-semistable object is at least its perturbed phase minus the deformation radius.

A nonzero owner deformed-slice object has both intrinsic old phase bounds predicted by its phase and the deformation radius.

Every owner deformed-slice object lies above its weak old lower phase cut.

Every owner deformed-slice object lies below its weak old upper phase cut.

theorem CategoryTheory.Triangulated.StabilityCondition.WithClassMap.deformedPred_intervalProp (C : Type u) [Category.{v, u} C] [Limits.HasZeroObject C] [HasShift C ℤ] [Preadditive C] [∀ (n : ℤ), (shiftFunctor C n).Additive] [Pretriangulated C] [IsTriangulated C] {Λ : Type u'} [AddCommGroup Λ] {κ : K₀ C →+ Λ} (σ : WithClassMap C κ) (W : Λ →+ ℂ) {r : ℝ} (hr0 : 0 ≤ r) (hr1 : r < 1) (hW : WeakStabilityCondition.StabilityCondition.Deformation.stabilitySeminorm C σ (W - σ.Z) ≤ ENNReal.ofReal r) {ε ψ δ : ℝ} (hε : 0 < ε) (hε2 : ε ≤ 1 / 2) (hsin : WeakStabilityCondition.StabilityCondition.Deformation.stabilitySeminorm C σ (W - σ.Z) < ENNReal.ofReal (Real.sin (Real.pi * ε))) (hδ : 0 < δ) :
deformedPred C σ W hr0 hr1 hW ε ψ ≤ Slicing.intervalProp C σ.slicing (ψ - ε - δ) (ψ + ε + δ)

Adding any positive padding turns weak confinement of an owner deformed slice into membership in an open old phase interval.

theorem CategoryTheory.Triangulated.StabilityCondition.WithClassMap.intervalProp_of_deformed_hn (C : Type u) [Category.{v, u} C] [Limits.HasZeroObject C] [HasShift C ℤ] [Preadditive C] [∀ (n : ℤ), (shiftFunctor C n).Additive] [Pretriangulated C] [IsTriangulated C] {Λ : Type u'} [AddCommGroup Λ] {κ : K₀ C →+ Λ} (σ : WithClassMap C κ) (W : Λ →+ ℂ) {r : ℝ} (hr0 : 0 ≤ r) (hr1 : r < 1) (hW : WeakStabilityCondition.StabilityCondition.Deformation.stabilitySeminorm C σ (W - σ.Z) ≤ ENNReal.ofReal r) {ε a b δ : ℝ} (hε : 0 < ε) (hε2 : ε ≤ 1 / 2) (hsin : WeakStabilityCondition.StabilityCondition.Deformation.stabilitySeminorm C σ (W - σ.Z) < ENNReal.ofReal (Real.sin (Real.pi * ε))) (hδ : 0 < δ) {E : C} (G : HNFiltration C (deformedPred C σ W hr0 hr1 hW ε) E) (hphase : ∀ (i : Fin G.n), a ≤ G.φ i ∧ G.φ i ≤ b) :
Slicing.intervalProp C σ.slicing (a - ε - δ) (b + ε + δ) E

An owner HN filtration by deformed slices inside a common phase window places its ambient object in the corresponding padded old phase interval.

The extension-closed owner cut Q(>t) lies above the old phase cutoff t-ε.

The extension-closed owner cut Q(≤t) lies below the old phase cutoff t+ε.

The extension-closed owner cut Q(<t) lies strictly below the old phase cutoff t+ε.