Essential Norms of Composition Operators

被引:0
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作者
Pamela Gorkin
Barbara D. MacCluer
机构
[1] Bucknell University,Department of Mathematics
[2] University of Virginia,Department of Mathematics
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关键词
Primary: 47B33; Secondary: 47B38; Composition operator; essential norm; Hardy spaces;
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摘要
We obtain simple estimates for the essential norm of a composition operator acting from the Hardy space Hp to Hq, p > q, in one or several variables. When p = ∞ and q = 2 our results give an exact formula for the essential norm.
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页码:27 / 40
页数:13
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