On a length-preserving inverse curvature flow of convex closed plane curves

On a length-preserving inverse curvature flow of convex closed plane curves
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凸封闭平面曲线的保长反曲率流

DOI:
10.1016/j.jde.2020.04.028
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发表时间:
2020-09
期刊:
J. Differential Equations
影响因子:
--
通讯作者:
Tsai Dong-Ho
Tsai Dong-Ho
中科院分区:
其他
文献类型:
--
作者:
Gao Laiyuan;Pan Shengliang;Tsai Dong-Ho

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研究了凸闭平面曲线的1/κ α型保长非局部流,其中α> 0.在此流程下,保持了演化曲线的凸性。对于全局流,当t→∞时,演化曲线光滑地收敛于圆。给出了数值爆破的例子和流整体存在的一个充分条件。
This paper deals with a 1/κ α-type length-preserving nonlocal flow of convex closed plane curves for all α> 0. Under this flow, the convexity of the evolving curve is preserved. For a global flow, it is shown that the evolving curve converges smoothly to a circle as t→∞. Some numerical blow-up examples and a sufficient condition leading to the global existence of the flow are also constructed.
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