Oxford Temporary Congestion Charge

As you might already know, the Oxford Temporary Congestion Charge has been approved and is planned to come into effect on Wednesday, 29 October 2025. There are various permits available.

Maybe one of you can create the shortest route to avoid all the charge zones. Or the shortest way to drive them all...

Image: Oxford traffic 1953

A polynomial upper bound for poset saturation
 Bastide, P Groenland, C Ivan, M Johnston, T European Journal of Combinatorics volume 129 103970-103970 (Oct 2025)
Mixed finite elements for the Gross–Pitaevskii eigenvalue problem: <i>a priori</i> error analysis and guaranteed lower energy bound
 Gallistl, D Hauck, M Liang, Y Peterseim, D IMA Journal of Numerical Analysis volume 45 issue 3 1320-1346 (04 Jun 2025)
A family of conforming finite element divdiv complexes on cuboid meshes
 Hu, J Liang, Y Ma, R Zhang, M Numerische Mathematik volume 156 issue 4 1603-1638 (06 Aug 2024)
Finite Element Grad Grad Complexes and Elasticity Complexes on Cuboid Meshes
 Hu, J Liang, Y Lin, T Journal of Scientific Computing volume 99 issue 2 (10 May 2024)
Conforming discrete Gradgrad-complexes in three dimensions
 Hu, J Liang, Y Mathematics of Computation volume 90 issue 330 1637-1662 (24 Mar 2021)
Conforming Finite Element DIVDIV Complexes and the Application for the Linearized Einstein--Bianchi System
 Hu, J Liang, Y Ma, R SIAM Journal on Numerical Analysis volume 60 issue 3 1307-1330 (02 Jun 2022)
Effective Whitney stratification of real algebraic varieties
 Helmer, M Leykin, A Nanda, V Mathematics of Computation
Tue, 28 Oct 2025
15:30
L4

Nearly G2-structures and G2-Laplacian co-flows

Jakob Stein
(State University of Campinas and University of Oxford)
Abstract

Nearly $G_2$-structures in dimension seven are, up to scaling, critical points of a geometric flow called (modified) Laplacian co-flow. Moreover, since nearly $G_2$-structures define Einstein metrics, they can also be associated to critical points of the volume-normalised Ricci flow. In this talk, we will discuss a recent joint work with Jason Lotay, showing that many of these nearly $G_2$ critical points are unstable for the modified co-flow, and giving a lower bound on the index.

Subscribe to