Probability Seminar
Jump to navigation
Jump to search
- When: Thursdays at 2:30 pm
- Where: 901 Van Vleck Hall
- Organizers: Hongchang Ji, Ander Aguirre, Hai-Xiao Wang
- To join the probability seminar mailing list: email probsem+subscribe@g-groups.wisc.edu.
- To subscribe seminar lunch announcements: email lunchwithprobsemspeaker+subscribe@g-groups.wisc.edu
Fall 2025
Thursdays at 2:30 PM either in 901 Van Vleck Hall or on Zoom
We usually end for questions at 3:20 PM.
September 4, 2025: No seminar
September 11, 2025: David Renfrew (Binghamton U.)
Singularities in the spectrum of random block matrices
We consider the density of states of structured Hermitian and non-Hermitian random matrices with a variance profile. As the dimension tends to infinity the associated eigenvalue density can develop a singularity at the origin. The severity of this singularity depends on the relative positions of the zero submatrices. We provide a classification of all possible singularities and determine the exponent in the density blow-up.