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Lines of curvature near umbilical points on surfaces immersed in R4 |
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| Authors: | Federico Sánchez-Bringas Ana Irene Ramírez-Galarza |
| Affiliation: | (1) Departmento de Matemáticas Facultad de Ciencias, U.N.A.M., 04510 México, D.F., México |
| Abstract: | LetM be a compact orientable surface,I:M  R4 an immersion of classCr and a normal unitary smooth vector field. We prove that in the space of pairs (I, ) the family of pairs all whose umbilical points are Darbouxian is generic. |
| Keywords: | Principal configurations structural stability umbilical points |
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