OAI/Geometry/SurfaceImmersion/Whitney/CrosscapDiagonalClosure.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

A prepared crosscap is an actual endpoint of the compactified unordered double curve: distinct double pairs approach its diagonal.

  1. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.crosscap_diagonal_mem_closure line 16