55 citations · 354 across the 38 of their papers we have counts for
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math.OA2013★ 12 cited
Inner amenability for groups and central sequences in factors
Ionut Chifan, Thomas Sinclair, Bogdan Udrea
We show that a large class of i.c.c., countable, discrete groups satisfying a weak negative curvature condition are not inner amenable. By recent work of Hull and Osin, our result…
math.OA2013★ 29 cited
W*-superrigidity for arbitrary actions of central quotients of braid groups
Ionut Chifan, Adrian Ioana, Yoshikata Kida
For any let be the quotient of the braid group through its center. We prove that any free ergodic probability measure preserving (pmp)…
math.FA2013
On the ergodic theorem for affine actions on Hilbert space
Ionut Chifan, Thomas Sinclair
This note establishes a new weak mean ergodic theorem for 1-cocycles associated to weakly mixing representations of amenable groups.