The BSE-property for vector-valued $L^p-$algebras

Abstract

Let $\mathcal{A}$ be a separable Banach algebra, $G$ be a locally compact Hausdorff group and $1<p<\infty$. In this paper, we first provide a necessary and sufficient condition, for which $L^p(G,\mathcal{A})$ is a Banach algebra, under convolution product. Then we characterize the character space of $L^p(G,\mathcal{A})$, in the case where $\mathcal{A}$ is commutative and $G$ is abelian. Moreover, we investigate the BSE-property for $L^p(G,\mathcal{A})$ and prove that $L^p(G,\mathcal{A})$ is a BSE-algebra if and only if $\mathcal{A}$ is a BSE-algebra and $G$ is finite. Finally, we study the BSE-norm property for $L^p(G,\mathcal{A})$ and show that if $L^p(G,\mathcal{A})$ is a BSE-norm algebra then $\mathcal{A}$ is so. We prove the converse of this statement for the case where $G$ is finite and $\mathcal{A}$ is unital.