ArticleOriginal scientific text
Title
On convolution operators with small support which are far from being convolution by a bounded measure
Authors 1
Affiliations
- Department of Mathematics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z2
Abstract
Let be the left convolution operators on with support included in F and denote those which are norm limits of convolution by bounded measures in M(F). Conditions on F are given which insure that , and are as big as they can be, namely have as a quotient, where the ergodic space W contains, and at times is very big relative to . Other subspaces of are considered. These improve results of Cowling and Fournier, Price and Edwards, Lust-Piquard, and others.
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