Evolution of hypersurfaces by the mean curvature minus an external force field

Evolution of hypersurfaces by the mean curvature minus an external force field
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平均曲率减去外力场的超曲面演化

DOI:
10.1007/s11425-007-2077-x
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发表时间:
2007-02
期刊:
Science in China Series A-Mathematics
影响因子:
--
通讯作者:
Jian, Huai-yu
Jian, Huai-yu
中科院分区:
其他
文献类型:
--
作者:
Liu, Yan-nan;Jian, Huai-yu

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在本文中,我们研究了通过平均曲率减去外力场来移动的超曲面的演化。结果表明,如果初始表面的平均曲率大于某个取决于外力场导数有界的常数,则流动将在有限时间内爆炸。对于线性力,我们证明超曲面的凸性在演化过程中保持不变,并且如果初始曲率小于力的斜率,则流动在任何有限时间内具有唯一的光滑解,并且随着时间趋于无穷大而扩展到无穷大。
In this paper, we study the evolution of hypersurface moving by the mean curvature minus an external force field. It is shown that the flow will blow up in a finite time if the mean curvature of the initial surface is larger than some constant depending on the boundness of derivatives of the external force field. For a linear force, we prove that the convexity of the hypersurface is preserved during the evolution and the flow has a unique smooth solution in any finite time and expands to infinity as the time tends to infinity if the initial curvature is smaller than the slope of the force.
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影响因子: 3.1
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