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Constructing Monotone Complete C -Algebras

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Abstract

We build monotone complete C -algebras from equivalence relations on topological spaces. This is applied to orbit equivalence relations associated with the action of a countable group G. In general, these algebras may be identified with monotone cross-product algebras arising from actions of G on commutative monotone complete C -algebras. Since different groups can give rise to the same orbit equivalence relation, this can be used to show that, apparently different monotone cross-product algebras, are in fact, isomorphic.

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Saitô, K., Wright, J.D.M. (2015). Constructing Monotone Complete C -Algebras. In: Monotone Complete C*-algebras and Generic Dynamics. Springer Monographs in Mathematics. Springer, London. https://doi.org/10.1007/978-1-4471-6775-4_7

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