# Arens regularity and derivations of Hilbert modules with the certain product

Document Type: Research Paper

Authors

University of Guilan

Abstract

Let $A$ be a $C^*$-algebra and $E$ be a left Hilbert $A$-module. In this paper we define a product on $E$ that making it into a Banach algebra and show that under the certain conditions $E$  is Arens regular. We also study the relationship between derivations of $A$ and $E$.

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