OAI/Geometry/SurfaceImmersion/Whitney/DoubleArcExceptionalTimes.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Along an embedded ordered double arc, only finitely many parameter values can meet any of the finitely many singular points of the prepared map.

  1. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.double_arc_exceptional_times_finite line 14
  2. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.prepared_crosscap_ordered_arc_regular line 26