Department of Mathematics

Mathematical Physics and Operator Algebras

  •  Ben Hayes, University of Virginia
  •  A random matrix approach to the Peterson-Thom conjecture
  •  11/09/2020
  •  3:30 PM - 4:20 PM
  •  Online (virtual meeting) (Virtual Meeting Link)
  •  Brent Nelson (

The Peterson-Thom conjecture asserts that any diffuse, amenable subalgebra of a free group factor is contained in a unique maximal amenable subalgebra. This conjecture is motivated by related results in Popa's deformation/rigidity theory and Peterson-Thom's results on $L^{2}$-Betti numbers. We present an approach to this conjecture in terms of so-called strong convergence of random matrices by formulating a conjecture which is a natural generalization of the Haagerup-Thorbjornsen theorem whose validity would imply the Peterson-Thom conjecture. This random matrix conjecture is related to recent work of Collins-Guionnet-Parraud.



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