OAI/Geometry/SurfaceImmersion/Whitney/SupportedExactCollar.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

Exact boundary-germ replacement inside any prescribed neighborhood, with the entire old singular set preserved.

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