OAI/Geometry/SurfaceImmersion/Whitney/FinitePairPointRegularization.lean

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Finite pair regularization also eliminates coincidences at a prescribed finite set, while preserving earlier pieces, regularity, and frozen crosscap germs.

  1. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.finite_surface_pair_regularization_avoiding_points line 19