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ON THE INFINITESIMAL ISOMETRIC DEFORMATIONS OF SUBMANIFOLDS
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作者 程新跃 杨文茂 《Acta Mathematica Scientia》 SCIE CSCD 1997年第4期392-404,共13页
In this paper, we consider the infinitesimal I- and Il-isometry deformations of submanifolds immersed in a space form N of constant curvature. We obtain some results which are new even in the case of N being the Eucli... In this paper, we consider the infinitesimal I- and Il-isometry deformations of submanifolds immersed in a space form N of constant curvature. We obtain some results which are new even in the case of N being the Euclidean space. At the same time, we generalize some classical results in E-3 Go the submanifolds immersed in a space form of constant curvature. 展开更多
关键词 infinitesimal isometric deformation mean curvature Gauss-Kronecker curvature sectional curvature
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A Theorem on Infinitesimal I-isometry of Surfaces Immersed in a Space with Constant Curvature
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作者 程新跃 杨文茂 邱敦元 《Chinese Quarterly Journal of Mathematics》 CSCD 1997年第4期63-69, ,共7页
In this paper we discuss the infinitesimal I-isometric de formations of surfaces immersed in a space with constant curvature. We obtain a sufficient condition for the de formation vector field to be zero vector field ... In this paper we discuss the infinitesimal I-isometric de formations of surfaces immersed in a space with constant curvature. We obtain a sufficient condition for the de formation vector field to be zero vector field which is generalization of the results in [1] and [2]. 展开更多
关键词 infinitesimal isometric deformation mean curvature vector sectional curvature
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