Contact properties of surfaces in R 3 with corank 1 singularities
Contact properties of surfaces in R 3 with corank 1 singularities
复制标题
R 3 中表面与 corank 1 奇点的接触特性
DOI:
10.2748/tmj/1429549581
复制
发表时间:
2015
影响因子:
0.5
通讯作者:
J. J. Nuño
中科院分区:
文献类型:
--
作者:
L. F. Martins;J. J. Nuño
We study the geometry of surfaces in R 3 with corank 1 singularities. At a singular point we define the curvature parabola using the first and second fundamental forms of the surface, which contains all the local second order geometrical information about the surface. The curvature parabola is used to introduce the concepts of asymptotic directions and umbilic curvature, which are related to contact properties of the surface with planes and spheres.