Our seminar views algebraic combinatorics broadly, explicitly including algebraic enumeration and related asymptotic and bijective combinatorics, as well as algebraic combinatorics as it appears in pure algebra and in applications outside mathematics.

Our local audience consists principally of combinatorics faculty and grad students. Talks are 50 minutes with 10 minutes for questions.

Organizers: Olya Mandelshtam and Tim Miller

Time: Thursday afternoons Waterloo time at 1pm (unless otherwise noted)

Location: The seminar will be conducted in MC 6029 and streamed over Zoom.

If you would like to attend virtually, please email Olya or Tim for the Zoom link and/or to be added to the weekly mailing list.

Winter 2023

Date	Speaker	Title
January 12	Andy Wilson (Kennesaw State University)	Coinvariants and superspace
	The ring of multivariate polynomials carries a natural action of the symmetric group. Quotienting by the ideal generated by the polynomials which are invariant under this action yields the "coinvariant algebra," an object with many beautiful algebraic and combinatorial properties. We will survey these properties and then discuss recent generalizations where the multivariate polynomials may contain anti-commuting ("superspace") variables. This talk is based on joint work with Brendon Rhoades.
January 19	François Bergeron (LACIM)	From the nabla operator to the super nabla operator
	The nabla operator is certainly one of the most exploited ones in the study of: Macdonald symmetric functions and their occurrences in several areas of investigations. After recalling some of these, as well as the historical role of many related operators, we will describe a new “super” version that unifies this whole area of investigation. The talk is illustrated by explicit examples, in an effort to make it accessible to a “general” audience. The new aspects are joint work with Jim Haglund, Alessandro Iraci, and Marino Romero.
January 26	Emily Barnard (De Paul University)
February 2	Nick Olson-Harris (Waterloo)
February 9	Elana Kalashnikov (Waterloo)
February 16	Stephen Gillen (Waterloo)
February 23	Reading week (no seminar)
March 2
March 9	Joel Lewis (George Washington University)
March 16	Kartik Singh (Waterloo)
March 23	Lucas Gagnon (York University)
March 30	Freddy Cachazo (Perimeter)
April 6

Waterloo Algebraic and Enumerative Combinatorics Seminar Winter 2023

Winter 2023

Past semesters:

Fall 2022

Spring 2022

Winter 2022

Fall 2021

Winter 2021