首页 | 本学科首页   官方微博 | 高级检索  
     


Regularity theory and traces of -harmonic functions
Authors:Pekka Koskela   Juan J. Manfredi   Enrique Villamor
Affiliation:Department of Mathematics, University of Michigan, Ann Arbor, Michigan 48109 ; Department of Mathematics and Statistics, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 ; Department of Mathematics, Florida International University, Miami, Florida 33199
Abstract:In this paper we discuss two different topics concerning $mathcal{A}$-
harmonic functions. These are weak solutions of the partial differential equation

begin{equation*}text{div}(mathcal{A}(x,nabla u))=0,end{equation*}

where $alpha (x)|xi |^{p-1}le langle mathcal{A}(x,xi ),xi rangle le beta (x) |xi |^{p-1}$ for some fixed $pin (1,infty )$, the function $beta $ is bounded and $alpha (x)>0$ for a.e. $x$. First, we present a new approach to the regularity of $mathcal{A}$-harmonic functions for $p>n-1$. Secondly, we establish results on the existence of nontangential limits for $mathcal{A}$-harmonic functions in the Sobolev space $W^{1,q}(mathbb{B})$, for some $q>1$, where $mathbb{B}$ is the unit ball in $mathbb{R}^n$. Here $q$ is allowed to be different from $p$.

Keywords:
点击此处可从《Transactions of the American Mathematical Society》浏览原始摘要信息
点击此处可从《Transactions of the American Mathematical Society》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号