Thomas Sinclair

activity

20092026

most citedOn the structural theory of II_1 factors of negatively curved groups, II: Actions by product groups

55 citations · 143 across the 24 of their papers we have counts for

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3 papers · 1 filter

math.FA2022

Remarks on the Grothendieck norm

Thomas Sinclair, Naveen Vivek

The goal of this short note is to point out three observations around the Grothendieck norm and semidefinite programming. The first is that the Grothendieck norm captures the diffi…

math.FA2020

Malnormal matrices

Garrett Mulcahy, Thomas Sinclair

We exhibit an operator norm bounded, infinite sequence ${A_{n}}$ of $3 n \times 3 n$ complex matrices for which the commutator map $X \mapsto X A_{n} - A_{n} X$ is uniformly bounded below a…

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.