Thu, 02 Feb 2023
15:00
L6

Higher Geometry by Examples

Chenjing Bu
Abstract

We give an introduction to the subject of higher geometry, by giving many examples of higher geometric objects, and looking at their properties. These include examples of 2-rings, 2-vector spaces, and 2-vector bundles. We show how these concepts help solve problems in ordinary geometry, as one of the many motivations of the subject. We assume no prerequisites on the subject, and the talk should be applicable to both differential and algebraic geometry.

Mon, 06 Mar 2023
16:00

TBD

Mon, 27 Feb 2023
16:00
Quillen Room

TBD

TBD
Mon, 20 Feb 2023
16:00
Quillen Room

TBD

TBD
Mon, 13 Feb 2023
16:00
Quillen Room

Symplectic Determinants

Mohamed Moakher
(University of Paris )
Abstract

The notion of a pseudocharacter was introduced by A.Wiles for GL_2 and generalized by R.Taylor to GL_n. It is a tool that allows us to deal with the
deformation theory of a residually reducible Galois representation when the usual techniques fail. G.Chenevier gave an alternative theory of "determinants" extending that of pseudocharacters to arbitrary rings. In this talk we will discuss some aspects of this theory and introduce a similar definition in the case of the symplectic group, which is the subject of a forthcoming work joint with J.Quast. 

Mon, 06 Feb 2023
16:00
L6

TBD

TBD

Nominate for the Royal Society's medals and awards

This year, the Society is encouraging nominations of joint collaborations, groups or teams for almost all its medals to better represent how contemporary science is undertaken. In addition, the Society is extremely keen to broaden the diversity of those nominated for its awards, so do please consider all contacts and colleagues.  

You do not have to be a Fellow of the Royal Society to nominate or be nominated for any of the Royal Society medals and awards.

Nominations close on Friday 24 February 2023 at 3pm GMT.

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