Mon, 08 May 2023
13:00
L1

Star-shaped quivers in four dimensions

Shlomo Razamat
(Technion)
Abstract
We will review the notion of across dimension IR dualities. As a concrete example we will  discuss such 4d across dimensions dual Lagrangian descriptions of compactifications of the 6d  minimal D type conformal matter theory on a sphere with arbitrary number of punctures. The Lagrangian has the form of a ``star shaped quiver'' with the rank of the central node depending on the 6d theory and the number and type of punctures. Using these Lagrangians one can construct across dimensions duals for arbitrary compactifications (any genus and type of punctures) of the D type conformal matter.

 

Weighted signature kernels
 Cass, T Lyons, T Xu, X Annals of Applied Probability volume 34 issue 1A 585-626 (28 Jan 2024)
Photos of, left to right, Angela, Anne and Clare

Why study maths?

Why study mathematics? Where can it take you?

Well, you could be the UK's Chief Scientific Adviser (Angela McLean, left), the Director GCHQ, the UK intelligence agency (Anne Keast-Butler, centre) or Chief Executive Citizens Advice UK (Clare Moriarty, right).

Existence of large-data global weak solutions to kinetic models of nonhomogeneous dilute polymeric fluids
 He, C Suli, E Kinetic and Related Models volume 17 issue 1 107-161 (14 Apr 2023)
Parabolic stochastic quantisation of the fractional $Φ^4_3$ model in
the full subcritical regime
 Duch, P Gubinelli, M Rinaldi, P (31 Mar 2023) http://arxiv.org/abs/2303.18112v3
Mon, 24 Apr 2023
15:30
L5

Coarse embeddings, and yet more ways to avoid them

David Hume
(Bristol)
Abstract

Coarse embeddings (maps between metric spaces whose distortion can be controlled by some function) occur naturally in various areas of pure mathematics, most notably in topology and algebra. It may therefore come as a surprise to discover that it is not known whether there is a coarse embedding of three-dimensional real hyperbolic space into the direct product of a real hyperbolic plane and a 3-regular tree. One reason for this is that there are very few invariants which behave monotonically with respect to coarse embeddings, and thus could be used to obstruct coarse embeddings.


 

Flattened and wrinkled encapsulated droplets: shape-morphing induced by gravity and evaporation
 Ricobelli, D Al Terke, H Laaksonen, P Metrangelo, P Paananen, A Ras, R Ciarletta, P Vella, D Physical Review Letters volume 130 (24 May 2023)
Stein-based preconditioners for weak-constraint 4D-var
 Palitta, D Tabeart, J Journal of Computational Physics volume 482 (15 Mar 2023)
Improving the condition number of estimated covariance matrices
 Tabeart, J Dance, S Lawless, A Nichols, N Waller, J (25 Oct 2018) http://arxiv.org/abs/1810.10984v4
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