Time-like hypersurfaces in de Sitter space and Legendrian singularities

Time-like hypersurfaces in de Sitter space and Legendrian singularities
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DOI:
10.1007/s10958-007-0232-0
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发表时间:
2007-07
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通讯作者:
S. Izumiya
S. Izumiya
中科院分区:
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文献类型:
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作者:
S. Izumiya

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我们从勒让德奇点理论的角度构建了研究德西特空间类时超曲面上的外在微分几何的基本框架。作为一个应用,我们研究了类时超曲面与德西特空间中平坦的完全脐状类时超曲面的接触。
We construct a basic framework for studying the extrinsic differential geometry on time-like hypersurfaces in the de Sitter space from the viewpoint of the theory of Legendrian singularities. As an application, we study the contact of time-like hypersurfaces with flat totally umbilic time-like hypersurfaces in the de Sitter space.