Alternatively have a look at the program.

## Group trisections and smooth four-manifolds

In this talk, I will introduce the notion of a trisection of a group, and I'll explain how studying group trisections is equivalent to studying smooth structures on 4-manifolds.

## Organizational meeting

We’ll talk about possible topics.

## Z/2-valued finite type concordance invariants of classical links

## The Path from Perturbative Chern-Simons Theory to Knot Invariants

## A survey on things like the Kontsevich integral, the LMO-invariant of 3-manifolds and the Aarhus integral

## On Habiro’s 3-manifold/knot invariants

## The Kontsevich integral revisited

## The Khovanov space and generalizations

A quantum knot cohomology is a knot invariant recovering a quantum knot polynomial as its Euler characteristic. Sometimes these cohomologies are the usual singular cohomologies of spaces which are themselves knot invariants. The first example is due to Lipshitz and Sarkar: the Khovanov space. I'll tell you why you might care about this if you're only interested in low-dimensional topology. I'll also sketch the construction, aiming to keep it understandable, and point to some generalizations. No knowledge assumed. This is join

## Surface systems of links and refined triple linking numbers

A surface system for a link in the 3-sphere is a collection of Seifert surfaces for the components of the links, that intersect one another transversally and in at most triple points. The intersections are thought of as oriented manifolds. Given two links with the same pairwise linking numbers, do they admit homeomorphic surface systems?

## A categorical approach to universal knot invariants

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