Abstract
We show that for G a countable group which is not locally finite, the isomorphism of free G-subflows is bi-reducible with with the universal countable Borel equivalence relation E∞, a result obtained independently by Gao-Jackson-Seward. We also show that the same result holds for the relation of weak conjugacy and for any intermediate Borel equivalence relation.
Original language | English |
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Pages (from-to) | 77-87 |
Number of pages | 11 |
Journal | Contemporary Mathematics |
Volume | 752 |
DOIs | |
State | Published - 2020 |