Absolutely continuous representing measures for R(X)

被引:0
|
作者
Brennan, J. E. [1 ]
机构
[1] Univ Kentucky, Dept Math, Lexington, KY 40506 USA
关键词
RATIONAL APPROXIMATION; ANALYTIC-FUNCTIONS; CAPACITY; SETS;
D O I
10.1112/blms/bdu067
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let X be a compact nowhere dense subset of the complex plane C, and let R(X) be the uniform closure of the rational functions having no poles on X. We present a short proof of the fact that each non-peak point for R(X) admits a representing measure absolutely continuous with respect area. If X happens to have finite perimeter, then every non-peak point admits a representing measure absolutely continuous with respect to arc length, provided the corresponding integral is taken in a principal value sense.
引用
收藏
页码:1133 / 1144
页数:12
相关论文
共 50 条