1 citations · 2 across the 5 of their papers we have counts for
5 papers
Biexact von Neumann algebras
Changying Ding, Jesse Peterson
We introduce the notion of biexactness for general von Neumann algebras, naturally extending the notion from group theory. We show that biexactness implies solidity for von Neumann…
First -Betti numbers and proper proximality
Changying Ding
We show that for a countable exact group, having positive first -Betti number implies proper proximality in this sense of \cite{BoIoPe21}. This is achieved by showing a coc…
On the structure of relatively biexact group von Neumann algebras
Changying Ding, Srivatsav Kunnawalkam Elayavalli
Using computations in the bidual of we develop a new technique at the von Neumann algebra level to upgrade relative proper proximality to full proper proximality…
Properly Proximal von Neumann Algebras
Changying Ding, Srivatsav Kunnawalkam Elayavalli, Jesse Peterson
We introduce the notion of proper proximality for finite von Neumann algebras, which naturally extends the notion of proper proximality for groups. Apart from the group von Neumann…
Proper proximality for various families of groups
Changying Ding, Srivatsav Kunnawalkam Elayavalli
In this paper, the notion of proper proximality (introduced in [BIP18]) is studied and classified in various families of groups. We show that if a group acts non-elementarily by is…