Ruled Surfaces of Finite Chen-Type
JOURNAL FOR GEOMETRY AND GRAPHICS(2018)
摘要
In this paper, we study ruled surfaces in the 3-dimensional Euclidean space which are of finite III-type, that is, they are of finite type, in the sense of B.-Y. Chen, with respect to the third fundamental form. We show that helicoids are the only ruled surfaces of finite III-type.
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关键词
Surfaces in Euclidean space,Surfaces of finite type,Beltrami operator
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