Gongfest 2025
So Long, and Thanks for All the Fish
Info
- Date: Thursday 26th June 2025
- Location: University of Wollongong
- Room: 35.G45 - Campus map
- Dinner location: TBA
Schedule
| Time | Event |
|---|---|
| 9:20 | Opening |
| 9:30 | Adam Rennie |
| 10:00 | Eva-Maria Hekkelman |
| 10:30 | Morning Tea |
| 11:00 | Galina Levitina |
| 11:30 | Serge Richard |
| 12:00 | Lunch |
| 13:30 | Anne Thomas |
| 14:00 | Murray Elder |
| 14:30 | Afternoon Tea |
| 15:00 | Nathan Brownlowe |
| 15:30 | Aidan Sims |
| 16:00 | UniBar |
| TBA | Dinner |
Talks
- 9:30 — Adam Rennie (University of Wollongong)
TBA
Abstract: TBA
- 10:00 — Eva-Maria Hekkelman (University of New South Wales)
TBA
Abstract: TBA
- 11:00 — Galina Levitina (Australian National University)
Magnetic Fields and Spectral Shifts: Hitchhiking Near Landau Levels
Abstract: The spectral structure of magnetic Schrödinger and Dirac operators in constant magnetic field is characterized by sequences of threshold energies, commonly known as Landau levels, which correspond to eigenvalues of infinite multiplicity. In this talk, I will explore the behaviour of the three-dimensional Dirac operator in the presence of a constant magnetic field, perturbed by a short-range electric potential. Specifically, I will describe the asymptotic behaviour of the spectral shift function near these Landau levels. No towel required.
- 11:30 — Serge Richard (Nagoya University)
TBA
Abstract: TBA
- 13:30 — Anne Thomas (University of Sydney)
Right-angled Coxeter groups and Hecke C*-algebras
Abstract: Right-angled Coxeter groups are generated by a collection of reflections, so that each pair of reflections either commutes or generates an infinite dihedral group. The associated Hecke algebra is a classical deformation of the group algebra, and the C*-algebraic version of the Hecke algebra was introduced by Davis, Dymara, Januszkiewicz and Okun in 2007. Since then, Hecke C*-algebras have been extensively studied. This talk will mention my joint work with Thomas Lam but will mainly survey results by other people.
- 14:00 — Murray Elder (University of Technology Sydney)
Self-similar groups at GAGTA 2025
Abstract: I will report on some of the talks at the most recent GAGTA (geometric and asymptotic group theory with applications) held 9-13 June 2025, in particular, talks (not mine) that mention new results about self-similar groups.
- 15:00 — Nathan Brownlowe (University of Sydney)
Totally tubular, dude!
Abstract: Tannaka–Krein duality is an extension of Pontryagin duality to the setting of noncommutative compact groups, and it says that a compact group can be reconstructed from a category of representations of the group. This duality theory has a very successful generalisation to the world of quantum groups, including to a duality theory for Woronowicz's compact quantum groups. I will report on current work with Dave Robertson (UNE) where we look at a combinatorial model for the representation category associated to the quantum automorphism group of an infinite homogeneous rooted tree.
- 15:30 — Aidan Sims (University of Wollongong)
TBA
Abstract: TBA
