The essential norm of a composition operator on a planar domain

被引：5
|
作者：
Fisher, SD [1 ]
Shapiro, JE [1 ]
机构：
[1] Northwestern Univ, Dept Math, Evanston, IL 60208 USA
来源：
ILLINOIS JOURNAL OF MATHEMATICS | 1999年 / 43卷 / 01期
关键词：
D O I：
10.1215/ijm/1255985340
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
We generalize to finitely connected planar domains the result of Joel Shapiro which gives a formula for the essential norm of a composition operator. In the process, we define and give some properties of a generalization of the Nevanlinna counting function and prove generalizations of the Littlewood inequality, the Littlewood-Paley identity, and change of variable formulas, as well.
引用
收藏
页码：113 / 130
页数：18
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