OAI/Geometry/RCD/Metric/PositiveDistanceLocality.lean
2 declarations, 0 contain sorry, 0 declared as axioms
The radial derivative does not depend on the outer distance cutoff
- theorem
OAI.RegularPointCoordinates.positiveSquaredDistance_pairing_independentline 20Source documentation
All positive squared-distance data at one center agree locally. Consequently their pairing with an arbitrary Sobolev direction is the same raw radial derivative, even though their compact supports differ.
theorem positiveSquaredDistance_pairing_independent {p : X} {r R₁ R₂ C₁ C₂ : ℝ} (hR₁ : 0 ≤ R₁) (hR₂ : 0 ≤ R₂) (hr₁ : r ≤ R₁) (hr₂ : r ≤ R₂) (χ₁ : GoodLaplacianCutoff μ hQ p R₁ C₁) (χ₂ : GoodLaplacianCutoff μ hQ p R₂ C₂) (a : SobolevSpace μ hQ) : localGamma μ hQ (positiveSquaredDistance μ hQ hR₁ χ₁) a =ᵐ[μ.restrict (ball p r)] localGamma μ hQ (positiveSquaredDistance μ hQ hR₂ χ₂) a := by …Mentions: OAI.RegularPointCoordinates.GoodLaplacianCutoff, OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.localGamma, OAI.RegularPointCoordinates.positiveSquaredDistance
- theorem
OAI.RegularPointCoordinates.distanceSourceRadius_addline 41