OAI/Geometry/SurfaceImmersion/Primitive/CompactCrossingPreservation.lean
1 declarations, 0 contain sorry, 0 declared as axioms
Uniform positivity at the later crossings from the actual two second-form limits. Only the limiting angular speed and mixed component enter compactness.
- theorem
OAI.ClosedSurfaceR4.GeometryPreservation.compact_crossing_preservationline 12