OAI/Geometry/SurfaceImmersion/Whitney/CrosscapAxisStartGerm.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

Straighten the exterior start germ to the actual crosscap kernel axis, without changing any point of the compact source arc.

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