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arXiv 1006.4787math.AP
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一类抛物型方程空间拟凹解水平集的曲率估计

Curvature estimates for the level set of spatial quasiconcave solutions to a class of parabolic equations

Chuanqiang Chen, Shujun Shi

摘要:

证明了方程$u_t=F(\n^2u, \n u, u, t)$解的第第二基本型的常秩定理,并给出了空间凸水平曲面的主曲率的几何下界.

英文摘要:

We prove a constant rank theorem for the second fundamental form of the spatial convex level surfaces of solutions to equations $u_t=F(\n^2u, \n u, u, t)$ under a structural condition, and give a geometric lower bound of the principal curvature of the spatial level surfaces.

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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