Using real-time modelling to inform the 2017 Ebola outbreak response in DR Congo
Thompson, R Hart, W Keita, M Fall, I Gueye, A Chamla, D Mossoko, M Ahuka-Mundeke, S Nsio-Mbeta, J Jombart, T Polonsky, J Nature Communications volume 15 issue 1 (06 Jul 2024)
Fri, 28 Jun 2024

12:00 - 13:15
L3

Homological link invariants from categories of A-branes

Elise LePage
(University of California Berkeley)
Abstract

In recent work, Aganagic proposed a categorification of quantum link invariants based on a category of A-branes. The theory is a generalization of Heegaard–Floer theory from gl(1|1) to arbitrary Lie algebras. It turns out that this theory is solvable explicitly and can be used to compute homological link invariants associated to any minuscule representation of a simple Lie algebra. This invariant coincides with Khovanov–Rozansky homology for type A and gives a new invariant for other types. In this talk, I will introduce the relevant category of A-branes, explain the explicit algorithm used to compute the link invariants, and give a sketch of the proof of invariance. This talk is based on 2305.13480 with Mina Aganagic and Miroslav Rapcak and work in progress with Mina Aganagic and Ivan Danilenko.

Tue, 12 Nov 2024
13:00
L2

Machine Learning and Calabi-Yau Manifolds

Magdalena Larfors
(Uppsala)
Abstract

: With motivation from string compactifications, I will present work on the use of machine learning methods for the computation of geometric and topological properties of Calabi-Yau manifolds.

Photo

Oxford Mathematician Alain Goriely has been appointed Gresham Professor of Geometry. The Professor of Geometry at Gresham College, London, is one of ten lecturers whose roles are to give free educational lectures to the general public, the purpose for which the college was founded in 1597 in the will of Thomas Gresham. In total there are over 130 public lectures a year, all of which are online.

Image of Becky Crossley and a whiteboard full of maths

'Show Me the Maths' gets down to the detail of the mathematics that takes place round here. These short, 90-second films, deliberately display the complexity of our subject. They span fundamental mathematics such as quasi-coherent sheaves and Dirichlet L-functions while also taking in our work in applied mathematics, such as the modelling of cancer treatment and efforts to make complex mathematics accessible to companies who need to use it in product development.

Tidal Forcing in Icy‐Satellite Oceans Drives Mean Circulation and Ice‐Shell Torques
Hay, H Hewitt, I Katz, R Journal of Geophysical Research: Planets volume 129 issue 6 (07 Jun 2024)
Tue, 29 Oct 2024
13:00
L2

Fivebrane Stars

Yoav Zigdon
(Cambridge )
Abstract
The low energy limit of string theory contains solutions of large redshift, either near an event horizon or extended objects. Alday, de Boer, and Messamah compared the massless BTZ black hole to the ensemble average of horizonless BPS solutions with the same charges and found them to differ. I will show that averaging gives rise to a spherically symmetric and horizon-free "fivebrane star" solution by employing an effective string description for Type IIA NS5-branes. By further including internal excitations of the extended objects in this description, we obtain solutions of smaller sizes and greater redshifts relative to those with purely transverse excitations, thereby approaching the black hole phase.


 

Parsing patterns: emerging roles of tissue self-organization in health and disease
Ramos, R Swedlund, B Ganesan, A Morsut, L Maini, P Monuki, E Lander, A Chuong, C Plikus, M Cell volume 187 issue 13 3165-3186 (20 Jun 2024)
Higher Order Lipschitz Greedy Recombination Interpolation Method
(HOLGRIM)
Lyons, T McLeod, A (05 Jun 2024)
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