SMRI Seminar List

Upcoming Seminars

 

SMRI Seminar
Thursday, 3 June 2021, 15:30 –16:30
Uri Onn, Australian National University
Seminar title: Base change and representation growth of arithmetic groups

More information
Location: The Quadrangle S225 (University of Sydney staff, students and affiliates only) and via Zoom
Abstract: A group is said to have polynomial representation growth if the sequence enumerating the isomorphism classes of finite dimensional irreducible representations according to their dimension is polynomially bounded. The representation zeta function of such group is the associated Dirichlet generating series. In this talk I will focus on representation zeta functions of arithmetic groups and their properties. I will explain the ideas behind a proof of a variant of the Larsen-Lubotzky conjecture on the representation growth of arithmetic lattices in high rank semisimple Lie groups (joint with Nir Avni, Benjamin Klopsch and Christopher Voll) and analogous results for arithmetic groups of type A_2 in positive characteristic (joint with Amritanshu Prasad and Pooja Singla).
Registration: Zoom meeting link
SMRI Seminar
Thursday, 10 June 2021, 15:30 –16:30
Behrouz Taji, University of Sydney
Seminar title: Projective families of varieties through birational geometry and Hodge theory

More information
Location: The Quadrangle S227 (University of Sydney staff, students and affiliates only) and via Zoom
Abstract: In the 1920s, building on Fermat’s Last Theorem, Mordell conjectured that the set of rational points of any smooth projective curve of genus at least two, over any number field, is finite. In the 1960s, Shafarevich turned this into a purely algebro-geometric conjecture involving families of smooth projective curves. Parshin, Arakelov and Faltings settled this conjecture by showing that the base spaces of such families are in some sense hyperbolic, as long as there is some variation in the algebraic structure of the fibers. Inspired by recent advances in birational geometry, Kebekus and Kovacs conjectured that these hyperbolicity type properties should hold for a vast class of projective families, with fibers of arbitrary dimension. In this talk I will discuss this conjecture and my solution to it. I will also talk about more recent progress in this area, based on a joint work with Kovacs (University of Washington).
Registration: Zoom meeting link
SMRI Algebra and Geometry Online
Thursday, 17 June 2021, 15:30 –17:00
Magdalena Boos, Ruhr University Bochum
Seminar title: TBA

More information
Location: The Quadrangle S227 (University of Sydney staff, students and affiliates only) and via Zoom
Abstract: TBA
Registration: Link to come

Past seminars

SMRI Seminar
Thursday, 20 May 2021, 15:30 –16:30
Stephan Tillmann, University of Sydney
Seminar title: On the space of properly convex projective structures

View seminar
Abstract: This talk will be in two parts. I will outline joint work with Daryl Cooper concerning the space of holonomies of properly convex real projective structures on manifolds whose fundamental group satisfies a few natural properties. This generalises previous work by Benoist for closed manifolds. A key example, computed with Joan Porti, is used to illustrate the main results.
YouTube video
SMRI Applied Mathematics Seminar
13 May 2021
Reinout Quispel, La Trobe University
Seminar title: How to discover properties of differential equations, and how to preserve those properties under discretization

View seminar
SMRI Algebra and Geometry Online
6 May 2021
Shun-Jen Cheng, Institute of Mathematics, Academia Sinica
Seminar title: Representation theory of exceptional Lie superalgebras

View seminar
SMRI Seminar
22 April 2021
Marcy Robertson, University of Melbourne
Seminar title: Expansions, completions and automorphisms of welded tangled foams

View seminar
SMRI Applied Mathematics Seminar
15 April 2021
Yury Stepanyants, University of Southern Queensland
Seminar title: The asymptotic approach to the description of two dimensional soliton patterns in the oceans

View seminar
SMRI Double Header Seminar
8 April 2021
Adam Piggott, Australian National University & Murray Elder, University of Technology Sydney
Seminar title: Geodesics in Groups

View seminar
SMRI Algebra and Geometry Online
26 February 2021
Monica Nevins, University of Ottawa
Seminar title: Characters and types: the personality of a representation of a p-adic group, revealed by branching to its compact open subgroups

View seminar
SMRI Algebra and Geometry Online
9 December 2020
Minhyong Kim, University of Warwick
Seminar title: Recent progress on the effective Mordell problem

View seminar
SMRI Algebra and Geometry Online
26 October 2020
Peng Shan, Tsinghua University
Seminar title: Coherent categorification of quantum loop sl(2)

View seminar
SMRI Algebra and Geometry Online
4 August 2020
Sam Raskin, The University of Texas at Austin
Seminar title: Tate's thesis in the de Rham setting

View seminar
SMRI Algebra and Geometry Online
6 July 2020
Eugen Hellmann, University of Münster
Seminar title: On the derived category of the Iwahori-Hecke algebra

View seminar
SMRI Algebra and Geometry Online
25 June 2020
Victor Ostrik, University of Oregon
Seminar title: Incompressible symmetric tensor categories

View seminar
SMRI Algebra and Geometry Online
4 June 2020
David Ben-Zvi, The University of Texas at Austin
Seminar title: Boundary conditions and Hamiltonian actions in geometric Langlands

View seminar

 

Larissa Fedunik-Hofman
Latest posts by Larissa Fedunik-Hofman (see all)