OAI/Geometry/SurfaceImmersion/Whitney/BoundaryInvariantCollar.lean

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3 declarations, 0 contain sorry, 0 declared as axioms

Uniform collar positivity for the normal invariant used by later curves.

  1. def OAI.ClosedSurfaceR4.CollarVelocity.normalInvariant line 14
  2. lemma OAI.ClosedSurfaceR4.CollarVelocity.normalInvariant_smoothOn line 17
  3. theorem OAI.ClosedSurfaceR4.CollarVelocity.boundary_invariant_collar line 29