Contraction of surfaces in hyperbolic space and in sphere
Contraction of surfaces in hyperbolic space and in sphere
复制标题
双曲空间和球面中的曲面收缩
DOI:
10.1007/s00526-020-01826-1
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发表时间:
2019-04
期刊:
影响因子:
--
通讯作者:
Tailong Zhou
中科院分区:
文献类型:
--
作者:
Yingxiang Hu;Haizhong Li;Yong Wei;Tailong Zhou
In this paper, we consider the contracting curvature flows of smooth closed surfaces in 3-dimensional hyperbolic space and in 3-dimensional sphere. In the hyperbolic case, we show that if the initial surfacehas positive scalar curvature, then along the flow by a positive powerof the mean curvatureH, the evolving surfacehas positive scalar curvature for. By assuming, we can further prove thatcontracts a point in finite time and become spherical as the final time is approached. We also show the same conclusion for the flows by powers of scalar curvature and by powers of Gauss curvature provided that the power. In the sphere case, we show that the flow by a positive powerof mean curvature contracts strictly convex surface into a round point in finite time if. The same conclusion also holds for the flow by powers of Gauss curvature provided that the power.
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DOI:
10.4310/jdg/1430744123
发表时间:
2013-08
期刊:
arXiv: Differential Geometry
影响因子:
--
作者:
Claus Gerhardt
通讯作者:
Claus Gerhardt
影响因子:
3
作者:
K. Tso
通讯作者:
K. Tso
DOI:
--
发表时间:
2003-04
期刊:
arXiv: Differential Geometry
影响因子:
--
作者:
B. Andrews
通讯作者:
B. Andrews
DOI:
10.1515/crelle.2007.051
发表时间:
2004-02
期刊:
--
影响因子:
--
作者:
B. Andrews
通讯作者:
B. Andrews
影响因子:
2.5
作者:
B. Andrews
通讯作者:
B. Andrews