OAI/Geometry/SurfaceImmersion/Whitney/SurfaceCrosscapTransverseNeighborhood.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

All distinct coincident points in a sufficiently small prepared crosscap neighborhood have transverse image tangent planes.

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