OAI/Geometry/SurfaceImmersion/Primitive/SupportedCrossingAdjustment.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

Localize a crossing-normal path by a smooth cutoff. The resulting section stays smooth even where the first pure vector vanishes outside the cutoff support.

  1. theorem OAI.ClosedSurfaceR4.VelocityFrame.supported_crossing_adjustment line 16