High-contrast homogenization: #
Provider.PolynomialHomogenization.Root.CorrectorDecay.CanonicalGaugeSpine
Imported from the Apache-2.0 HighContrastHomogenization development at commit
7a13dbcd8d6609264a713373f5c69ceeac870472.
theorem
HCPolySupport.HighContrast.exists_canonicalIdentityGaugeFamily
{d : ℕ}
[NeZero d]
{g : ℝ}
{a : CoeffSpace d}
{abar : Mat d}
{amplitude kappa x : ℝ}
(hg : g ∈ Set.Ico 0 1)
(hcert : PrintOrderQuantitativeNormalizedReferenceCertificate abar g amplitude kappa x a)
:
∃ (hS : Matrix.PosDef (symmPart abar)) (hI : Matrix.PosDef (symmPart 1)) (aIdentity : Book.Ch03.CoeffFamily d),
(∀ (Q : TriadicCube d),
(aIdentity.coeffOn Q).toCoeffField = ↑↑((canonicalIdentityGeometry d g hg).centeredCoeffSpace 1 hI (exactGaugeCoeffSpace a abar hS))) ∧ ScalarIdentityPowerTail aIdentity (printCertificateOrder g) amplitude kappa x