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arXiv 1302.6529math.APmath.FA
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伪微分算子、分数阶Laplacian算子和Dirichlet-to-Neumann算子的热核估计

Heat kernel estimates for pseudodifferential operators, fractional Laplacians and Dirichlet-to-Neumann operators

Heiko Gimperlein, Gerd Grubb

摘要:

本文的目的是建立闭流形上正阶经典强椭圆伪微分算子P的半群exp(-tP)的积分核的上下估计. Poissonian界推广了拉普拉斯算子的分数幂摄动所得到的界。在自伴情形下,研究了C++语言中t的扩张.特别地,我们的结果适用于Dirichlet-to-Neumann半群。

英文摘要:

The purpose of this article is to establish upper and lower estimates for the integral kernel of the semigroup exp(-tP) associated to a classical, strongly elliptic pseudodifferential operator P of positive order on a closed manifold. The Poissonian bounds generalize those obtained for perturbations of fractional powers of the Laplacian. In the selfadjoint case, extensions to t in C_+ are studied. In particular, our results apply to the Dirichlet-to-Neumann semigroup.

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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