OAI/Geometry/SurfaceImmersion/Whitney/CrosscapStripFrame.lean

GitHub source file

5 declarations, 0 contain sorry, 0 declared as axioms

A smooth invertible target frame on a neighborhood of the actual strip axis.

  1. def OAI.ClosedSurfaceR4.FiniteOrderSmoothing.CrosscapCoordinateStrip.transverseVector line 16
  2. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.CrosscapCoordinateStrip.transverseVector_smooth line 20
  3. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.CrosscapCoordinateStrip.transverseVector_ne_zero line 27
  4. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.curveNormalLinear_smooth line 34
  5. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.CrosscapCoordinateStrip.exists_frame line 43