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arXiv 1303.7280math.AP
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带边界条件的椭圆型线弹性方程组的热核

Heat kernel for the elliptic system of linear elasticity with boundary conditions

Justin Taylor, Seick Kim, Russell Brown

摘要:

本文考虑在第二个Korn不等式成立的区域中具有有界可测系数的椭圆型线性弹性力学系统。在假设椭圆型方程组的弱解在内部是Hölder连续的条件下,构造了Dirichlet、Neumann或混合边界条件下的热核.此外,我们证明了如果混合问题的弱解在边界上是Hölder连续的,那么相应的热核有Gauss界.特别是,如果该域是一个二维Lipschitz域满足螺旋形或非切向的可达性条件的集合上,我们指定Dirichlet边界条件,那么我们证明了热核有一个高斯界。作为应用,我们构造了椭圆型混合问题的格林函数。

英文摘要:

We consider the elliptic system of linear elasticity with bounded measurable coefficients in a domain where the second Korn inequality holds. We construct heat kernel of the system subject to Dirichlet, Neumann, or mixed boundary condition under the assumption that weak solutions of the elliptic system are Hölder continuous in the interior. Moreover, we show that if weak solutions of the mixed problem are Hölder continuous up to the boundary, then the corresponding heat kernel has a Gaussian bound. In particular, if the domain is a two dimensional Lipschitz domain satisfying a corkscrew or non-tangential accessibility condition on the set where we specify Dirichlet boundary condition, then we show that the heat kernel has a Gaussian bound. As an application, we construct Green's function for elliptic mixed problem in such a domain.

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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