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arXiv 1301.6463math.DG
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三维Heisenberg群中曲线曲面的基本定理

The fundamental theorems for curves and surfaces in 3d Heisenberg group

Hung-Lin Chiu, Sin-Hua Lai

摘要:

利用活动标架和李群的Cartans方法,研究了三维Heisenberg群中曲线曲面的局部等价问题,得到了曲线曲面的完备不变量集.对于曲面,根据这些不变量及其适当的导数,给出了Heisenberg群上由适应度量导出的度量的高斯曲率公式,从而形成了一个新的闭曲面的欧拉数公式.

英文摘要:

We study the local equivalence problems of curves and surfaces in three dimensional Heisenberg group via Cartans method of moving frames and Lie groups, and find a complete set of invariants for curves and surfaces. For surfaces, in terms of these invariants and their suitable derivatives, we also give a Gaussian curvature fromula of the metric induced from the adapted metric on Heisenberg group, and hence form a new formula for the Euler number of a closed surface.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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