Weyl asymptotics for fractional-order Dirichlet realizations in nonsmooth cases

IF 0.3 4区 数学 Q4 MATHEMATICS Mathematica Scandinavica Pub Date : 2023-10-26 DOI:10.7146/math.scand.a-138002
Gerd Grubb
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引用次数: 1

Abstract

Let $P$ be a symmetric $2a$-order classical strongly elliptic pseudodifferential operator with \emph{even} symbol $p(x,\xi)$ on $\mathbb{R}^n $ ($0
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非光滑情况下分数阶Dirichlet实现的Weyl渐近性
设$P$为一个对称的$2a$阶经典强椭圆伪微分算子,在$\mathbb{R}^n $ ($0<a<1$)上具有\emph{偶数}符号$p(x,\xi)$,例如$(-\Delta )^a$的扰动。设$\Omega \subset \mathbb{R}^n$有界,设$P_D$为$\mathbb{R}^n\setminus\Omega$中在外部条件$u=0$下定义的$L_2(\Omega)$中的狄利克雷实现。当$p(x,\xi)$和$\Omega$为$C^\infty $时,已知特征值$\lambda_j$(对$j\to \infty$按非递减序列排序)满足Weyl渐近公式\begin{equation*} \lambda _j(P_{D})=C(P,\Omega )j^{2a/n}+o(j^{2a/n}) \text {for $j\to \infty $}, \end{equation*},其中$C(P,\Omega)$由$P$的主符号确定。我们现在证明了这个结果对更一般的算子是有效的,它们可能具有非光滑的$x$依赖,在Lipschitz域中,并且它扩展到$\tilde P=P+P'+P”$,其中$P'$是一个具有一定映射属性的$<\min\{2a, a+\frac 12\}$阶算子,并且$P”$在$L_2(\Omega )$(例如$P”=V(x)\in L_\infty(\Omega)$)中有界。并讨论了$P_D$的特征函数的正则性。
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来源期刊
Mathematica Scandinavica
Mathematica Scandinavica 数学-数学
CiteScore
0.60
自引率
0.00%
发文量
19
审稿时长
>12 weeks
期刊介绍: Mathematica Scandinavica is a peer-reviewed journal in mathematics that has been published regularly since 1953. Mathematica Scandinavica is run on a non-profit basis by the five mathematical societies in Scandinavia. It is the aim of the journal to publish high quality mathematical articles of moderate length. Mathematica Scandinavica publishes about 640 pages per year. For 2020, these will be published as one volume consisting of 3 issues (of 160, 240 and 240 pages, respectively), enabling a slight increase in article pages compared to previous years. The journal aims to publish the first issue by the end of March. Subsequent issues will follow at intervals of approximately 4 months. All back volumes are available in paper and online from 1953. There is free access to online articles more than five years old.
期刊最新文献
Bilinear forms, Schur multipliers, complete boundedness and duality Finitely presented isomorphisms of Cuntz-Krieger algebras and continuous orbit equivalence of one-sided topological Markov shifts Weyl asymptotics for fractional-order Dirichlet realizations in nonsmooth cases Harmonic analogue of Bohr phenomenon of certain classes of univalent and analytic functions Critical configurations for three projective views
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