Fractional-order operators: Boundary problems, heat equations
Fractional-order operators: Boundary problems, heat equations
复制标题
分数阶算子:边界问题、热方程
DOI:
10.1007/978-3-030-00874-1_2
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
G. Grubb
中科院分区:
文献类型:
--
作者:
G. Grubb
The first half of this work gives a survey of the fractional Laplacian (and related operators), its restricted Dirichlet realization on a bounded domain, and its nonhomogeneous local boundary conditions, as treated by pseudodifferential methods. The second half takes up the associated heat equation with homogeneous Dirichlet condition. Here we recall recently shown sharp results on interior regularity and on $L_p$-estimates up to the boundary, as well as recent H\"older estimates. This is supplied with new higher regularity estimates in $L_2$-spaces using a technique of Lions and Magenes, and higher $L_p$-regularity estimates (with arbitrarily high H\"older estimates in the time-parameter) based on a general result of Amann. Moreover, it is shown that an improvement to spatial $C^\infty $-regularity at the boundary is not in general possible.
DOI:
10.1214/18-aos1708
发表时间:
2019
期刊:
The Annals of Statistics
影响因子:
--
作者:
Monard, François;Nickl, Richard;Paternain, Gabriel P.
通讯作者:
Paternain, Gabriel P.