$L^p$-Spaces as Quasi *-Algebras

Abstract

The Banach space $L^p(X,μ)$, for $X$ a compact Hausdorff measure space, is considered as a special kind of quasi *-algebra (called CQ*-algebra) over the C*-algebra $C(X)$ of continuous functions on $X$. It is shown that, for $p \geq 2$, $(L^p(X,μ), C(X))$ is *-semisimple (in a generalized sense). Some consequences of this fact are derived.