OAI/Geometry/SurfaceImmersion/Whitney/CrosscapEndpointSmoothArc.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

The actual initial crosscap branch has a smooth regular embedded parameterization including its singular endpoint, with both source projections regular.

  1. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.crosscap_endpoint_smooth_arc line 17