| A measurable-group-theoretic solution to von Neumann’s problem (2007) | |||||||||||||||||
Abstract | |||||||||||||||||
| We give a positive answer, in the measurable-group-theory context, to von Neumann’s problem of knowing whether a non-amenable countable discrete group contains a non-cyclic free subgroup. We also get an embedding result of the free-group von Neumann factor into restricted wreath product factors. | |||||||||||||||||
Publication details | |||||||||||||||||
| |||||||||||||||||