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arXiv · 1512.06677

A class of II_1 factors with exactly two group measure space decompositions

Anna Sofie Krogager·Stefaan Vaes
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Abstract

We construct the first II_1 factors having exactly two group measure space decompositions up to unitary conjugacy. Also, for every positive integer $n$, we construct a II_1 factor $M$ that has exactly $n$ group measure space decompositions up to conjugacy by an automorphism.

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Anna Sofie Krogager, Stefaan Vaes. 2016-07-29. A class of II_1 factors with exactly two group measure space decompositions. https://arxiv.org/abs/1512.06677

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