OAI/Geometry/SurfaceImmersion/Whitney/SmoothArcReverse.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

Reversing a compact smooth regular arc preserves its image and exchanges the endpoint germs, with no loss of regularity.

  1. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.SmoothCompactArc.reverse_arc line 16