UCL Colloquium Schedule
Tuesday, 3 October 2023, 45pm Location: 25 Gordon St. Room 500

Speaker: Imre Leader (Cambridge)
Title:
Euclidean Ramsey Theory
Abstract:
Euclidean Ramsey Theory is a natural multidimensional version of Ramsey Theory. A subset of Euclidean space is called Ramsey if, for any k, whenever we partition Euclidean space of sufficiently high dimension into k classes, one class much contain a congruent copy of our subset. It is still unknown which sets are Ramsey. We will discuss background on this and then proceed to some recent results.
February 6, 45pm Location: 25 Gordon St. Room 500

Speaker: Ailsa Keating (Cambridge)
Title: The symplectic topology of singularities
Abstract:
Given an isolated complex singularity, any smoothing (i.e. Milnor fibre) of it is naturally a symplectic manifold. This leads to a rich interplay, first suggested by Arnolâ€™d: on the one hand, ideas from singularity theory yield a wealth of interesting symplectic phenomena; and conversely, symplectic topology is a very fertile viewpoint from which to revisit and shed light on classical singularity theory.
This talk will give a biased introduction to this circle of ideas. Special attention will be given to providing explicit examples, with particular focus on two variable examples (i.e. curve singularities). No prior knowledge of symplectic geometry (or singularity theory) will be assumed.
Tuesday, 12 March 45pm Location: Bentham House, 124 Gideon Schreier

Speaker: Peter Hintz (ETH)
Title:
Abstract:
You'll find the old colloquium schedules
here.