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LeanPool.PhaseRetrieval.DimdPoly.Internal.Hermite1Dimd.ProductAnnulusCircle

ProductAnnulusCircle #

ProductAnnulusCircle #

Orbitwise circle inequalities lifted to a fixed product annulus. Scaffolding notes: ScaffoldingNotes/Circle/product_annulus_circle.md.

theorem Hermite1DimdLEAN.rhoPointwise (a u v : ℂ) :
rho a u ≤ rho a v + ‖u - v‖

Reverse-triangle comparison for modulus defects.

theorem Hermite1DimdLEAN.rhoPointwiseSq (a u v : ℂ) :
rho a u ^ 2 ≤ 2 * rho a v ^ 2 + 2 * ‖u - v‖ ^ 2

Quadratic defect comparison derived from rhoPointwise.

Annulus-local circle estimate for the local window.