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math.DG2015
Equiaffine Darboux Frames for Codimension 2 Submanifolds contained in Hypersurfaces
Marcos Craizer, Marcelo J. Saia, Luis F. Sánchez
Consider a codimension submanifold , where is a hypersurface. The envelope of tangent spaces of along generalizes t…
math.DG2015
Envelope of mid-planes of a surface and some classical notions of affine differential geometry
Ady Cambraia Junior, Marcos Craizer
For a pair of points in a smooth locally convex surface in 3-space, its mid-plane is the plane containing its mid-point and the intersection line of the corresponding pair of tange…