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IP-rigidity and eigenvalue groups
Published online by Cambridge University Press: 08 March 2013
Abstract
We examine the class of increasing sequences of natural numbers which are IP-rigidity sequences for some weakly mixing probability-preserving transformation. This property is closely related to the uncountability of the eigenvalue group of a corresponding non-singular transformation. We give examples, including a super-lacunary sequence which is not IP-rigid.
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- Copyright ©2013 Cambridge University Press
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