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紧致连通曲面的法线特征 |
王仲才 |
南昌大学数学系!江西南昌330047; |
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WANG Zhong|cai(Department of Mathematics,Nanchang University,Nanchang,330047 China) |
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摘要 利用Morse理论 ,给出紧致连通曲面的法线的一个很有趣的特征 :若S R3是亏格为 g的紧致连通曲面。则几乎对所有的p∈R3 ,S上至少有 2 +2g个点的法线经过 p。
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关键词 :
亏格,
法线,
紧致连通曲面
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Abstract:Let SR 3 be a compact connected surface of genus g.Then for almost all p∈R 3,there are at least 2+2g line,which pass p and are normal to S. |
Key words:
normal line;
genus
compact connected surface
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出版日期: 2001-06-28
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