SMS scnews item created by Catherine Meister at Mon 23 Mar 2026 1233
Type: Seminar
Distribution: World
Expiry: 6 Apr 2026
Calendar1: 27 Mar 2026 0900-1100
CalLoc1: SMRI Seminar Room (A12 Macleay Room 301)
CalTitle1: Matroids II
Auth: cmeister@staff-10-48-20-225.vpnuser.sydney.edu.au (cmei0631) in SMS-SAML

Informal Friday Seminar: Simpson

Connor Simpson, University of Sydney


Informal Friday Seminar, 27th March 2026


9 am – 11 am, SMRI Seminar Room (A12 Macleay Room 301)


Abstract: This is the second talk in a two-part series on matroids. Following a brief recap of valuative invariants, we will seek to understand better the valuative group via the geometry of the permutohedral variety. We will then discuss an analogous variety in the setting of Coxeter combinatorics.

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