Saint Louis University Menu Search

To subscribe to a weekly email list with upcoming events, send an empty email message to This email address is being protected from spambots. You need JavaScript enabled to view it.

(See past events)


Charles Burnette, SLU

Friday, September 20 at 4:00pm in Ritter 242 with refreshments beforehand in the Ritter Hall Lobby.

Title: Involution factorizations of Ewens random permutations

Abstract: An involution is a permutation that is its own inverse. Given a permutation σ of [n], let involn(σ) denote the number of ways to express σ as a composition of two involutions of [n]. The random variables involn are asymptotically lognormal when the symmetric groups Sn are each equipped with Ewens Sampling Formula probability measures of some fixed positive parameter θ. In this talk, I will summarize what is already known and explain new results about the previously determined limiting distribution of involn for uniform random permutations, i.e. the specific case of θ = 1.

Algebra Seminar

Katie Radler and Sarah Aljohani, SLU graduate students

This will be a weekly series of talks beginning Tuesday, September 24 at 10:00am in Ritter 225.

Title: Variations of prime ideals and factorization of ideals in Leavitt path algebras