Several well-known formulas involving reflection groups of finite-dimensional algebraic systems break down in infinite dimensions, but there is often a predictable way to correct them. Oxford Mathematician Thomas Oliver talks about his research getting to grips with what structures underlie the mysterious correction process.
InFoMM CDT Group Meeting
InFoMM CDT Group Meeting
The Group Meeting will be held virtually unless the Covid 19 lockdown is over in which case the location will be L2.
InFoMM CDT Group Meeting
The Group Meeting will be held virtually unless the Covid 19 lockdown is over in which case the location will be L3.
InFoMM CDT Group Meeting
Oxford Mathematician Andre Guerra talks about quasiconvexity and its role in the Calculus of Variations:
15:45
Boundaries and 3-dimensional topological field theories
Abstract
Just as differential equations often boundary conditions of various types, so too do quantum field theories often admit boundary theories. I will explain these notions and then discuss a theorem proved with Constantin Teleman, essentially characterizing certain 3-dimensional topological field theories which admit nonzero boundary theories. One application is to gapped systems in condensed matter physics.