Non-bifurcation regulation of chaos in a memristive
Hopfield neural network
Moroz, I Nonlinear Dynamics
Limit cycles in planar piecewise linear systems of saddle-saddle type with a nonregular separation line
Wei, Z Cheng, X Duan, J Moroz, I Zhang, L Discrete and Continuous Dynamical Systems - B 0-0 (01 Jan 2025)
Thu, 19 Jun 2025

14:00 - 15:00
L4

Unusual transport in odd-diffusive systems

Erik Kalz
(University of Potsdam)
Further Information

Erik Kalz is a PhD student at U Potsdam in the group of Ralf Metzler. The group focuses on nonequilibrium statistical physics and anomalous stochastic processes, with applications to biological and soft matter systems.

Abstract

Odd systems, characterised by broken time-reversal or parity symmetry, 
exhibit striking transport phenomena due to transverse responses. In this 
talk, I will introduce the concept of odd diffusion, a generalisation of 
diffusion in two-dimensional systems that incorporates antisymmetric tensor 
components. Focusing on systems of interacting particles, I adapt a 
geometric approach to derive effective transport equations and show how 
interactions give rise to unusual transport in odd systems. I present 
effects like enhanced self-diffusion, reversed Hall drift and even absolute 
negative mobility that solely originate in odd diffusion. These results 
reveal how microscopic symmetry-breaking gives rise to emergent, equilibrium 
and non-equilibrium transport, with implications for soft matter, chiral 
active systems, and topological materials.

 

Welcome to the Week 6 Bulletin!

Please see below for all relevant news and announcements.

To suggest an item for a future Bulletin, please email bulletin@maths.ox.ac.uk.

undefined

Born on this day: Russian mathematician Aleksandr Lyapunov

Congratulations on reaching the end of the academic year! Please join us for celebratory drinks and nibbles at The Alchemist (Westgate, Bonn Square, Oxford OX1 1TR) at 19:00-21:00 on Thursday 12th June to chat with our team about life at Optiver, our roles, and the opportunity to make an early application this summer.

 Feel free to bring a friend who could be interested in a role in trading, research, or software engineering.

The MSc in Mathematical Sciences (OMMS) is a standalone MSc which runs parallel with Part C and will be taking on its fourth cohort of students in the next academic year. To help the MSc students feel welcome in the department, we have set up a buddy system where an OMMS student will be paired with a current Part B student who's staying on to Part C, so they can communicate over the summer if they choose.

Tue, 10 Jun 2025
15:00
C6

Nearly G2-structures and G2-Laplacian co-flows.

Jakob Stein
(UNICAMP )
Abstract

In this talk, we discuss nearly G2 structures, which define positive Einstein metrics, and are, up to scale, critical points of a geometric flow called (modified) Laplacian co-flow. We will discuss a recent joint work with Jason Lotay showing that many of these nearly G2 critical points are unstable for the flow. 

Subscribe to