Operators on the Banach space of $p$-continuous vector-valued functions

TL;DR

This paper investigates conditions under which operators on Banach spaces of p-continuous vector-valued functions can be represented via tensor products, providing new insights into operator factorization and representation.

Contribution

It establishes necessary and sufficient conditions for representing certain bounded linear operators as tensor product operators on Banach spaces of p-continuous functions.

Findings

Characterization of operators $S$ as tensor product operators $U$

Conditions for the existence of $U$ such that $S=U^{#}$

Application to operators on spaces of continuous vector-valued functions

Abstract

Let $X$, $Y$, and $Z$ be Banach spaces, and let $\alpha$ be a tensor norm. Let a bounded linear operator $S\in\mathcal{L}(Z,\mathcal{L}(X,Y))$ be given. We obtain (necessary and/or sufficient) conditions for the existence of an operator $U\in\mathcal{L}(Z\hat{\otimes}_{\alpha}X,Y)$ such that $(Sz)x = U(z\otimes x)$, for all $z\in Z$ and $x\in X$, i.e., $S= U^{#}$, the associated operator to $U$. Let $\Omega$ be a compact Hausdorff space and denote by $\mathcal{C}(\Omega)$ the space of continuous functions from $\Omega$ into $\mathbb{K}$. We apply these results to $S\in\mathcal{L}(\mathcal{C}(\Omega),\mathcal{L}(X, Y))$ for characterizing the existence of an operator $U\in\mathcal{L}(\mathcal{C}_{p}(\Omega,X),Y)$ such that $U^{#}=S$, where $\mathcal{C}_{p}(\Omega,X)$ is the space of $p$-continuous $X$-valued functions, $1\leq p \leq \infty$.