# Algebra and Topology Seminar

## Contact

The Algebra and Topology seminar invites speakers from a broad spectrum of areas, including algebraic and differential geometry, algebraic topology, low-dimensional topology, representation theory, quantum algebra, and number theory.

There is also a Google calendar for the seminar, which typically lists scheduled speakers in advance of their posting here.

## Past events

25

Jul

2017

Speaker: Boris Khesin (Toronto)

The Gauss linking number of two curves in the three-space has a complex counterpart.

28

Jun

2017

Speaker: Nora Ganter (University of Melbourne)

I will discuss the notion of categorical group and it's relationship to loop groups in a number of examples.

20

Jun

2017

Speaker: Stuart Mitchell (MSI/ANU)

A graphical calculus will be developed for the algebra of shifted symmetric functions defined by Okounkov and Olshanski, using the Heisenberg categorificati

02

May

2017

Speaker: Slawomir Klimek (Indiana University–Purdue University Indianapolis)

Quantum mechanical structures associated to a pair of pants play prominent role in conformal and topological quantum field theories.

11

Apr

2017

Speaker: Behrouz Taji (Northwestern University)

Abstract: By proving Calabi's conjecture, Yau proved that the first and second Chern classes of a compact complex manifold with ample canonical bundle encod

04

Apr

2017

Speaker: Will Donovan, University of Tokyo

Abstract: Kapranov and Schechtman recently gave an approach to defining perverse sheaves of categories, or perverse schobers.

21

Mar

2017

Speaker: David Penneys (Ohio State)

The notion of an algebra makes sense in any monoidal category C4.

28

Feb

2017

Speaker: Dr Vigleik Angeltveit (MSI/ANU)

I will try to explain how the Norm map shows up in some different parts of mathematics like in equivariant stable homotopy groups and Witt vectors.

21

Feb

2017

Speaker: Professor Peter Tingley (Loyola University Chicago)

Lusztig's canonical basis is a fairly miraculous object that, among other things, gives a chosen basis for every finite dimensional irreducible representati