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MSI Colloquium 2019
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Past events
29
Nov
2019
Nonlocal minimal surfaces »
Serena Dipierro will discuss some recent results on a geometric problem of nonlocal type, consisting of the minimisation of a fractional version of the perimeter.
28
Nov
2019
Elliptic curves and complex dynamics »
We will discuss a new and surprising approach to the interaction between geometry and arithmetic of elliptic curves.
20
Nov
2019
Subfactors and Noncommutativity »
In this talk Professor Bisch will explain a natural notion of noncommutativity for a subfactor and illustrate it with a theorem that provides the first examples of very noncommutative, irreducible subfactors.
05
Sep
2019
A gallery model for affine flag varieties »
In this talk, Dr Yusra Naqvi will define positively folded galleries, and then look at a new recursive description of the set of end alcoves of folded galleries which are positive with respect to alcove-induced orientations.
29
Aug
2019
Nonlinear dispersive water waves and tsunamis »
In this talk, Dr Mitsotakis will review the derivation and the theoretical properties of some systems of nonlinear and dispersive partial differential equations related to long waves of small amplitude.
15
Aug
2019
Path signatures in topology, dynamics and data analysis »
In this talk, Professor Nanda will describe the homotopical origins of path signatures, their subsequent application to stochastic analysis, and how they facilitate efficient machine learning in topological data analysis.
18
Jul
2019
Stratification of representations of finite groups »
The talk is devoted to the study of modular representations of finite groups.
04
Jul
2019
An introduction to tensor triangular geometry »
In this talk, Prof Beren Sanders will give an introduction to tensor triangulated categories.
27
Jun
2019
Can constructing “chaotic coordinates” help to understand transport in Non-Integrable Dynamical Systems? »
In this talk, Dr Stuart Hudson will show that isotherms of the anisotropic diffusion equation coincide with ghost surfaces.
20
Jun
2019
On the role of applied mathematics and computer science in fusion research »
In this talk, Prof Frank Jenko will discuss the history of integer multiplication, and give an overview of the new algorithm.
16
May
2019
The McKay correspondence in higher dimensions »
The McKay correspondence is a surprising, and beautiful, bijection (defined geometrically by du Val, and algebraically by McKay) between the isomorphism classes of Kleinian surfaces singularities and the simply laced Dynkin diagrams.
09
May
2019
Integer multiplication in time O(n log n) »
In this talk, Dr David Harvey will discuss the history of integer multiplication, and give an overview of the new algorithm.
11
Apr
2019
Using polynomials and complex analysis to check for numerical error in the experimental study of an optimisation algorithm »
Splitting methods are special algorithms that are commonly used to solve optimisation problems for engineering and machine learning.This talk will introduce its main concepts with simple examples, and it features many pictures and the use of dynamical tools for visualisation.
28
Mar
2019
Chebyshev polynomials, Lehmer numbers, and huge primes »
We consider the appearance of prime numbers in a family of linear recurrence sequences, labelled by a positive integer n.
21
Mar
2019
Honeycombs and polytopes: another look at representation theory »
After introducing several geometrical models that can be used to calculate multiplicities in Lie group theory, we describe associated polytopes whose volumes can be considered as approximations of those multiplicities.
