Wed, 26 Nov 2025
16:00 -
17:00
L6
Extending the Reshetikhin-Turaev TQFT
Glen Lim
(University of Oxford )
Abstract
A d-dimensional TQFT is a topological invariant which assigns (d-1)-dimensional manifolds to vector spaces and d-dimensional cobordisms to linear maps. In the early 90s, Reshetikhin and Turaev constructed examples of these in the case d=3, using the data of certain types of linear categories. In this talk, I will provide an overview of this construction, and then explore how this might be meaningfully extended downwards to assign 1-manifolds to "2-vector spaces". Minimal knowledge of category theory assumed!
Categorical Symmetries in Spin Models with Atom Arrays
Warman, A
Yang, F
Tiwari, A
Pichler, H
Schäfer-Nameki, S
Physical Review Letters
volume 135
issue 20
(13 Nov 2025)
Effective permeability conditions for diffusive transport through impermeable membranes with gaps
Brennan, M
Yeo, E
Pearce, P
Dalwadi, M
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Tue, 02 Dec 2025
14:00
14:00
L6
The canonical dimension: a different approach to investigate the wavefront set
Mick Gielen
((Mathematical Institute University of Oxford))
Abstract
An important invariant in the complex representation theory of reductive p-adic groups is the wavefront set, because it contains information about the character of such a representation. In this talk, Mick Gielen will introduce a new invariant called the canonical dimension, which can be said to measure the size of a representation and which has a close relation to the wavefront set. He will then state some results he has obtained about the canonical dimensions of compactly induced representations and show how they teach us something new about the wavefront set. This illustrates a completely new approach to studying the wavefront set, because the methods used to obtain these results are very different from the ones usually used.
Global Convergence of Deep Galerkin and PINNs Methods for Solving Partial Differential Equations
COHEN, S
Sirignano, J
Jiang, D
SIAM Journal on Financial Mathematics
Cyclic loading of a heterogeneous non-linear poroelastic material
Godard, Z
Moulton, D
Waters, S
(05 Jun 2025)
Thu, 05 Feb 2026
12:00 -
13:00
L3
OCIAM TBC
Marcelo Dias
(University of Edinburgh)
The join button will be published 30 minutes before the seminar starts (login required).
Further Information
Dr Marcelo A. Dias is a Reader in Structural Engineering at the University of Edinburgh. His research spans theoretical structural mechanics, soft condensed matter, and materials modelling. He focuses on understanding how the mechanical behaviour of elastic bodies emerges from the interplay between material composition and carefully designed internal geometry. His work has applications across shape formation in nature, biomechanics, materials and structural mechanics, and the controlled design and functionality of thin plates and shells. You can find some wonderful examples of this research on his research site: https://mazdias.wordpress.com/research/
Thu, 19 Feb 2026
12:00 -
13:00
L3
OCIAM TBC
Edwina Yeo
(University College London)
The join button will be published 30 minutes before the seminar starts (login required).
Further Information
Dr Edwina Yeo is an applied mathematician working at the interface of continuum mechanics and mathematical biology. She specialises in developing mathematical models for biological and biomedical fluid-mechanics processes, with research spanning regenerative medicine, nanotechnology, microbiology and geology. Her recent work includes models of bacterial adhesion in fluid flow, Von Willebrand Factor dynamics in arterial flows, and microscale contaminant behaviour extracted from imaging data.
Her publications appear in journals such as Biomechanics and Modelling in Mechanobiology, Advanced Materials, and Royal Society Interface, alongside recent collaborative preprints. She is currently an EPSRC National Fellow in Fluid Dynamics at UCL and a visiting research fellow in OCIAM.