English

Non-Orbit Equivalent Actions of $\Bbb F_n$

Group Theory 2009-04-07 v2 Operator Algebras

Abstract

For any 2n2\leq n\leq \infty, we construct a concrete 1-parameter family of non-orbit equivalent actions of the free group Fn\Bbb F_n. These actions arise as diagonal products between a generalized Bernoulli action and the action Fn(T2,λ2)\Bbb F_n\curvearrowright (\Bbb T^2,\lambda^2), where Fn\Bbb F_n is seen as a subgroup of SL2(Z)_2(\Bbb Z).

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Cite

@article{arxiv.math/0610452,
  title  = {Non-Orbit Equivalent Actions of $\Bbb F_n$},
  author = {Adrian Ioana},
  journal= {arXiv preprint arXiv:math/0610452},
  year   = {2009}
}

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final version

R2 v1 2026-07-22T17:44:17.568Z