Given a weakly compact action (Ozawa-Popa) of a discrete group $\Gamma$ on p.m space $X$, consider the Koopman representation $\pi$ on $L^2(X)$. Compose this representation with the Calkin projection. Will the resulting representation of $\Gamma$ be weakly contained in the left regular representation of the group, perhaps under suitable conditions?
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Koopman representation, weakly compact action, Ozawa Popa
Florin Radulescu
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