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LeanPool.PhaseRetrieval.DimdPoly.Internal.CoefficientLimitRigidity

CoefficientLimitRigidity #

CoefficientLimitRigidity #

Compactness bridge scaffold whose only public downstream output is a finite coefficient-threshold theorem.

theorem DimdPolyLEAN.positiveGauge_coercivity {d : } (hd : 0 < d) (kappa : MultiIndex d) (F : Pkappa d kappa) (hF_ne : F 0) (hF_norm : F = 1) :
∃ (C_F : ), 0 < C_F ∀ (G : Pkappa d kappa), positivePhaseGauge F (F + G)G C_F * defect F G
theorem DimdPolyLEAN.lowAnnulusDefectControl {d : } (hd : 0 < d) (kappa : MultiIndex d) (F : Pkappa d kappa) (hF_ne : F 0) (hF_norm : F = 1) (J : ) :
∃ (delta_low : ), 0 < delta_low ∀ {H : Pkappa d kappa} {t : }, orthogonalToPk F HH = 10 < tt 4highAnnulusMass J (ofPkappa kappa H) 1 / 4defect F (t H) delta_low * tlowAnnulusMass J (ofPkappa kappa H) 1 / 4