OAI/Geometry/SurfaceImmersion/Whitney/SurfaceRuledInterior.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

A supported replacement on the actual surface makes any prescribed compact inner subarc ruled, preserving all singularities and endpoint germs.

  1. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.CrosscapCoordinateStrip.surface_ruled_interior line 18