OAI/Geometry/SurfaceImmersion/Correction/PolynomialQuadraticPhases.lean
10 declarations, 0 contain sorry, 0 declared as axioms
Exact zero- and double-phase terms of the polynomial Hessian.
- def
OAI.ClosedSurfaceR4.JetPolynomial.pairPhasesline 11 - def
OAI.ClosedSurfaceR4.JetPolynomial.pairDirectionsline 12 - def
OAI.ClosedSurfaceR4.JetPolynomial.starFieldline 13 - lemma
OAI.ClosedSurfaceR4.JetPolynomial.starField_smoothline 15 - lemma
OAI.ClosedSurfaceR4.JetPolynomial.complexJet_starFieldline 21 - lemma
OAI.ClosedSurfaceR4.JetPolynomial.phase_starline 27 - lemma
OAI.ClosedSurfaceR4.JetPolynomial.starField_phaseline 34 - lemma
OAI.ClosedSurfaceR4.JetPolynomial.pair_oscillatoryDataline 40 - lemma
OAI.ClosedSurfaceR4.JetPolynomial.quadraticComplex_phase_factorline 54 - theorem
OAI.ClosedSurfaceR4.JetPolynomial.half_second_variation_oscillationline 67Source documentation
The coefficient of the zero phase is precisely the mixed phase Hessian; all remaining self-interaction has phase twice the original phase.
theorem half_second_variation_oscillation (e : Expression) (G : Base → Space) {φ : Base → ℝ} {H : Base → Fin 4 → ℂ} (hφ : ContDiff ℝ ∞ φ) (hH : ContDiff ℝ ∞ H) (τ : ℝ) (z : Base × ℝ) : (1 / 2 : ℝ) * (e.variations 1).eval ![G, realField (fun p => phase τ φ p • H p), realField (fun p => phase τ φ p • H p), 0] z = ((phase τ φ z.1 ^ 2) * conjugatedVariation e G (pairPhases φ φ) (pairDirections H H) τ 1 z).re / 4 + (conjugatedVariation e G (pairPhases φ (fun p => -φ p)) (pairDirections H (starField H)) τ 1 z).re / 4 := by …Mentions: OAI.ClosedSurfaceR4.JetPolynomial.Expression, OAI.ClosedSurfaceR4.JetPolynomial.Base, OAI.ClosedSurfaceR4.JetPolynomial.Space, OAI.ClosedSurfaceR4.JetPolynomial.realField, OAI.ClosedSurfaceR4.JetPolynomial.pairPhases, OAI.ClosedSurfaceR4.JetPolynomial.pairDirections, OAI.ClosedSurfaceR4.JetPolynomial.starField