OAI/Geometry/SurfaceImmersion/Whitney/OrientedDoubleTransition.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Transitions between oriented double-curve parameters remain local smooth diffeomorphisms after a global smooth reparameterization.

  1. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.smooth_real_homeomorph_deriv_ne_zero line 13
  2. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.SmoothDoubleChart.reparameterized_transition line 27