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arXiv · 2007.11685

Maximum Modulus Principle For Multipliers and Mean Ergodic Multiplication Operators

Eugene Bilokopytov
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Abstract

The main goal of this note is to show that (not necessarily holomorphic) multipliers of a wide class of normed spaces of continuous functions over a connected Hausdorff topological space cannot attain their multiplier norms, unless they are constants. As an application, a contractive multiplication operator is either a multiplication with a constant, or is completely non-unitary. Additionally we explore possibilities for a multiplication operator to be (weakly) compact and (uniformly) mean ergodic.

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BibTeXRIS

Eugene Bilokopytov. 2020-07-22. Maximum Modulus Principle For Multipliers and Mean Ergodic Multiplication Operators. https://arxiv.org/abs/2007.11685

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