3 papers
math.OA2019
Maximal rigid subalgebras of deformations and -cohomology
Rolando de Santiago, Ben Hayes, Daniel J. Hoff +1
In the past two decades, Sorin Popa's breakthrough deformation/rigidity theory has produced remarkable rigidity results for von Neumann algebras which can be deformed inside a…
math.OA2016
Prime II factors arising from irreducible lattices in products of rank one simple Lie groups
Daniel Drimbe, Daniel Hoff, Adrian Ioana
We prove that if is an icc irreducible lattice in a product of connected non-compact rank one simple Lie groups with finite center, then the II factor is prime. In p…
math.DS2015
von Neumann's problem and extensions of non-amenable equivalence relations
Lewis Bowen, Daniel Hoff, Adrian Ioana
The goals of this paper are twofold. First, we generalize the result of Gaboriau and Lyons [GL07] to the setting of von Neumann's problem for equivalence relations, proving that fo…