OAI/Geometry/RCD/Harmonic/MeanGramInverse.lean
5 declarations, 0 contain sorry, 0 declared as axioms
The actual inverse of an exactly normalized mean Gram
- theorem
OAI.RegularPointCoordinates.meanGram_injective_of_exact_normalizationline 22Source documentation
Exact normalization makes the original mean Gram injective.
theorem meanGram_injective_of_exact_normalization : Function.Injective (sobolevMeanGram μ hQ U Ω hΩ) := by … - def
OAI.RegularPointCoordinates.meanGramEquivline 33Source documentation
The mean Gram itself, with the inverse supplied by its proved nondegeneracy. This is independent of which exact normalizer witnesses it.
def meanGramEquiv [FiniteDimensional ℝ E] : E ≃L[ℝ] E := …
- theorem
OAI.RegularPointCoordinates.meanGramEquiv_applyline 37 - theorem
OAI.RegularPointCoordinates.meanGram_apply_normalizer_adjointline 42Source documentation
The inverse Gram direction is exactly
A A* xi, without a symmetry assumption on the chosen normalizer.theorem meanGram_apply_normalizer_adjoint (xi : E) : sobolevMeanGram μ hQ U Ω hΩ (A (A.toContinuousLinearMap.adjoint xi)) = xi := by … - theorem
OAI.RegularPointCoordinates.meanGramEquiv_symm_applyline 53