Further, we obtain an upper bound for the product of the principal curvatures of the hypersurfaces.
进而,得到了超曲面主曲率乘积的一个上界。
参考来源 - 关于常曲率空间形式中子流形的一些结果Calculating methods of normal vector,principal curvatures and principal directions at each triangular mesh vertexes are researched. Types of vertexes on surface are analyzed.
该文研究了曲面三角网格模型顶点法矢、主曲率和主方向的计算方法,分析了曲面上点的类型,提出了一种基于断裂面匹配的破碎物体拼接方法。
参考来源 - 基于断裂面匹配的破碎物体拼接技术·2,447,543篇论文数据，部分数据来源于NoteExpress
To certain extent, therefore, the thickness of the oil-bearing interval as well as the volume and permeability of the fracture porosity are also influenced by principal curvatures.
因而油层厚度及与之有关的裂缝孔隙体积和渗透率也在一定程度上受到构造面主曲率的影响。
Rotation hypersurfaces in pseudo-Riemannian space forms are defined and their explicit parametrizations are given in the present paper, and their principal curvatures are computed.
本文定义了伪黎曼空间型中的旋转超曲面，并给出其参数表达式及主曲率计算公式。
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