OAI/Geometry/SurfaceImmersion/Whitney/ActualRuledTwist.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

Compactly supported twists inside the actual ruled target tube lift to smooth surface maps and preserve the complete singular set.

  1. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.ActualRuledRectangle.twist_family line 17