Singularities of Anti de Sitter torus Gauss maps
Singularities of Anti de Sitter torus Gauss maps
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DOI:
10.1007/s00574-010-0002-3
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发表时间:
2008-04
期刊:
影响因子:
--
通讯作者:
Liangyun Chen;S. Izumiya
中科院分区:
文献类型:
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作者:
Liangyun Chen;S. Izumiya
We study timelike surfaces in Anti de Sitter 3-space as an application of singularity theory. We define two mappings associated to a timelike surface which are calledAnti de Sitter nullcone Gauss imageandAnti de Sitter torus Gauss map. We also define a family of functions namedAnti de Sitter null height functionon the timelike surface. We use this family of functions as a basic tool to investigate the geometric meanings of singularities of the Anti de Sitter nullcone Gauss image and the Anti de Sitter torus Gauss map.