Online Seminar – August 2020 – Professor Geordie Williamson – Modular Representation Theory and Geometry

Joy Lukman

  • Thursday
    6 August 2020
    4:00 pm - 5:00 pm

Event Time:
Thursday, 6 August @ 1600 (AEST) (Melbourne)
Thursday, 6 August @ 1400 (CST) (Beijing, China)
Thursday, 6 August @ 1130 (IST) (New Delhi, India)
Thursday, 6 August @ 0700 (BST) (London)
Thursday, 6 August@ 0200 (EDT) (New York)
Wednesday, 5 August @ 2300 (PDT) (San Francisco)

Presenter: Professor Geordie Williamson, Sydney Mathematical Research Institute (SMRI) / University of Sydney

Biography: University of Sydney & Wikipedia

Topic: Modular Representation Theory and Geometry

Abstract: This will be a broad survey talk on interactions between geometry and representation theory, with a focus on representations in positive characteristic (“modular representation theory”). I will outline several basic questions (e.g. for modular representations of the symmetric group) which appear very difficult, and have resisted direct algebraic approaches for over a hundred years. Over the last two decades, a new approach has emerged via geometric representation theory. It turns out that subtle questions concerning torsion in cohomology control these problems, and this allows some progress to be made. Many open questions remain, but at this point there can be no doubt that a fascinating and deep theory awaits us.

Structure: 45 minutes seminar with 15 minutes question time

Registration: please click here

  • Registration closes on Wednesday, 5 August @ 1600 (AEST) (Melbourne Time)
  • Zoom link to the online seminar will be emailed to registrants within 24 hours after registration closes