...
【24h】

Extremal functions for capacities

机译:极限功能

获取原文
获取原文并翻译 | 示例
           

摘要

The extremal function c_K for the variational 2-capacity cap(K) of a compact subset K of the Royden harmonic boundary 6R of an open Riemann surface R relative to an end W of R, referred to as the capacitary function of K, is characterized as the Dirichlet finite harmonic function h on W vanishing continuously on the relative boundary (δ)W of W satisfying the following three properties: the normal derivative measure *dh of h exists on δR with *dh ≧0 on δR; *dh = 0 on δRK; h = 1 quasieverywhere on K. As a simple application of the above characterization, we will show the validity of the following inequalityrnhm(K) ≦ κ·cap(K)~(1/2)rnfor every compact subset K of δR, where hm(K) is the harmonic measure of K calculated at a fixed point α in W and κ is a constant depending only upon the triple (R,W,α).
机译:表征相对于R的末端W的敞开黎曼曲面R的Royden谐波边界6R的紧致子集K的极小函数c_K(称为K的电容函数)由于W的Dirichlet有限谐波函数h在W的相对边界(δ)W上连续消失,满足以下三个特性:h的正态导数* dh在δR上存在,* dh≥0在δR上; * dh =δRK= 0; h =在K上的任何地方。作为上述表征的简单应用,我们将证明对于δR的每个紧子集K,以下不等式hm(K)≤κ·cap(K)〜(1/2)rn的有效性,其中hm(K)是在W中的固定点α处计算的K的谐波量度,并且κ仅取决于三元组(R,W,α)是常数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号