OAI/Geometry/SurfaceImmersion/Whitney/SmoothCrosscapAxisTangent.lean
1 declarations, 0 contain sorry, 0 declared as axioms
The actual smoothed source arc has a nonzero axial velocity and zero image velocity at its singular endpoint.
- theorem
OAI.ClosedSurfaceR4.FiniteOrderSmoothing.smooth_crosscap_axis_tangentline 16