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arXiv 1004.1187math.APmath.DG
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完全nonlinear elliptic方程拟凹解水平集的凸性估计

Convexity estimates for level sets of quasiconcave solutions to fully nonlinear elliptic equations

Pengfei Guan, Lu Xu

摘要:

在Bianchini-Longinetti-Salani在\cite{BLS}中引入的一个精化结构条件下,建立了凸环域上$F(D^2u, Du, u, x)=0$解的水平曲面主曲率的几何下界.我们还证明了这些解的凸水平曲面的第二基本型的常秩定理。

英文摘要:

We establish a geometric lower bound for the principal curvature of the level surfaces of solutions to $F(D^2u, Du, u, x)=0$ in convex ring domains, under a refined structural condition introduced by Bianchini-Longinetti-Salani in \cite{BLS}. We also prove a constant rank theorem for the second fundamental form of the convex level surfaces of these solutions.

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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