SMS scnews item created by Catherine Meister at Tue 28 Apr 2026 1742
Type: Seminar
Distribution: World
Expiry: 12 May 2026
Calendar1: 1 May 2026 1500-1700
CalLoc1: Quad Seminar Room A14-L4.13
Auth: cmeister@159-196-153-133.9fc499.syd.nbn.aussiebb.net (cmei0631) in SMS-SAML

Informal Friday Seminar: Stapledon

Combinatorial Hodge theory

Alan Stapledon, University of Sydney

Informal Friday Seminar, Friday 1st May 2026

3 pm – 5 pm, Quad Seminar Room A14-L4.13 (***Note unusual time and location***)


Abstract: The Kähler package is being delivered to more and more households throughout the world. Inspired by geometry, its contents help build a bridge between combinatorics and commutative algebra. In this talk, we’ll unpack the package and see some of what it can do — from motivating the definition of Lorentzian polynomials to applications involving Bruhat posets of Coxeter groups and matroids.

The Informal Friday Seminar is a space where members of our research group can explain interesting things to each other in a casual setting. The rules of the seminar are the following:

  1. Any question/additional explanation from the audience is allowed.
  2. Ego out the window.
  3. Examples, examples, examples.

    4. The seminar is intended to be conversational, so come ready to engage. If you choose to give an IFS talk, it's important to know that part of the IFS philosophy is that learning is not linear. In other words, it if perfectly acceptable to give a talk that is a prerequisite for a talk that already happened. For IFS updates, please see the IFS website