Previous Conferences & Workshops
Flag manifolds over semifields I
The study of totally positive matrices, i.e., matrices with
positive minors, dates back to 1930s. The theory was generalised by
Lusztig to arbitrary split reductive groups using canonical bases,
and has significant impacts on the theory of cluster...
Computational - Statistical gaps and the Group Testing problem
10:30am|Remote Access - see Zoom link below
In a plethora of random models for constraint satisfaction and
statistical inference problems, researchers from different
communities have observed computational gaps between what
existential or brute-force methods promise, and what known
efficient...
From Weyl modules to simple modules in many small steps
Let G be a semisimple group over an algebraically closed field
of large characteristic. There are two important types of rational
representations of G: the Weyl modules and the simple modules. We
will explain how to go from the first type to the...
Modular perverse sheaves on symplectic singularities
A symplectic singularity has a natural stratification by Poisson
leaves, which are symplectic, hence even-dimensional.
Perverse sheaves constructible with respect to this stratification
are semisimple if the coefficients are in characteristic
zero...
Mean-Field limits for Coulomb-type dynamics
Sylvia Serfaty
We consider a system of $N$ particles evolving according to the
gradient flow of their Coulomb or Riesz interaction, or a similar
conservative flow, and possible added random diffusion. By Riesz
interaction, we mean inverse power $s$ of the distance...
Smith theory and Langlands functoriality
According to Langlands’ conjectures, algebraic automorphic forms
should be parametrized by global Galois representations, and smooth
representations of $p$-adic groups should be parametrized by local
Galois representations. These parametrizations...
Towards canonical bases in homology of symplectic resolutions
I will describe a program aimed at understanding numerics of
representations of quantized symplectic resolutions in positive
characteristic. A key ingredient is a generalization of the action
of the affine braid group on the derived category of...
2:00pm|Virtual Event via Zoom
Organizers:
The workshop was organized by Geordie Williamson(IAS/University
of Sydney) and took place virtually.
Geometric representation theory has proved itself to be an
unreasonably effective tool in pure mathematics. This conference
(the...
2:00pm|Simonyi Hall 101 and Remote Access
Approximating Max Cut with Subexponential Linear Programs
Tselil Schramm
11:15am|Remote Access - see Zoom link below
In the max cut problem, we are given an n-vertex graph and we
are asked what is the maximum fraction of edges "cut" by any
partition of the vertices? This problem can be reformulated as an
optimization problem over the cut polytope, which has...