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Composition operators on the Hardy space of the tridisc

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arxiv 2312.02565 v1 pith:QFFXY5TK submitted 2023-12-05 math.FA

classification math.FA
keywords compositiontridiscconditionhardyoperatorsspaceassociatedbehaviour
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abstract

We give a necessary and sufficient condition for a holomorphic self-map $\phi$ of the tridisc to induce a bounded composition operator on the associated Hardy space. This condition depends on the behaviour of the first and the second derivative of the symbol at boundary points. We also discuss compactness of composition operators on the bidisc and the tridisc.

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