paper

Orbital free entropy, revisited

arXiv:1210.6421 · doi:10.1512/iumj.2014.63.5220

Abstract

We give another definition of orbital free entropy introduced by Hiai, Miyamoto and us, which does not need the hyperfiniteness assumption for each given random multi-variable. The present definition is somehow related to one of its several recent `generalizations' due to Biane and Dabrowski, but completely agrees with the original definition and much closer to the original approach.

19 pages; final version

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