OAI/Geometry/SurfaceImmersion/Whitney/ActualRelativeFrame.lean

GitHub source file

2 declarations, 0 contain sorry, 0 declared as axioms

Smooth transport and exact exterior pasting produce a genuine formal differential for the original Euclidean surface map.

  1. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.transportedNormalFrame_smoothOn line 13
  2. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.actual_relative_frame line 34