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arXiv 1306.6672math.AP
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完全nonlinear elliptic方程黏性解的边界正则性

Boundary regularity for viscosity solutions of fully nonlinear elliptic equations

Luis Silvestre, Boyan Sirakov

摘要:

给出了欧氏区域上非凸完全非线性一致椭圆型方程和不等式的连续黏性解在边界处的正则性结果.证明了(i)具有Pucci极值算子的双边不等式的任何解在边界上是$C^{1,α}$;(ii)完全非线性一致椭圆型方程狄利克雷问题的解在边界上是$C^{2,α}$;(iii)相应的渐近展开成立.这是光滑解的经典Krylov估计对黏性解的推广。

英文摘要:

We provide regularity results at the boundary for continuous viscosity solutions to nonconvex fully nonlinear uniformly elliptic equations and inequalities in Euclidian domains. We show that (i) any solution of two sided inequalities with Pucci extremal operators is $C^{1,α}$ on the boundary; (ii) the solution of the Dirichlet problem for fully nonlinear uniformly elliptic equations is $C^{2,α}$ on the boundary; (iii) corresponding asymptotic expansions hold. This is an extension to viscosity solutions of the classical Krylov estimates for smooth solutions.

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