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arXiv · 1504.06820

Positive representations of $C_0(X)$. I

Marcel de Jeu·Frejanne Ruoff
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Abstract

We introduce the notion of a positive spectral measure on a $\sigma$-algebra, taking values in the positive projections on a Banach lattice. Such a measure generates a bounded positive representation of the bounded measurable functions. If $X$ is a locally compact Hausdorff space, and $\pi$ is a positive representation of $C_0(X)$ on a KB-space, then $\pi$ is the restriction to $C_0(X)$ of such a representation generated by a unique regular positive spectral measure on the Borel $\sigma$-algebra of $X$. The relation between a positive representation of $C_0(X)$ on a Banach lattice and -- if it exists -- a generating positive spectral measure on the Borel $\sigma$-algebra is further investigated; here and elsewhere phenomena occur that are specific for the ordered context.

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Marcel de Jeu, Frejanne Ruoff. 2015-04-26. Positive representations of $C_0(X)$. I. https://doi.org/10.1215/20088752-3462285

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