© | << < ? > >> | Dror Bar-Natan: Talks:

Algebraic Knot Theory

Max Planck Institute for Mathematics, Bonn, January 20, 2020, 3-4PM.

Abstract. This will be a very "light" talk: I will explain why about 13 years ago, in order to have a say on some problems in knot theory, I've set out to find tangle invariants with some nice compositional properties. In my second talk in Bonn I will explain how such invariants were found - though they are yet to be explored and utilized.

Handout: AKT.html, AKT.pdf, AKT.png.

Talk Video (in Sydney, on September 16).

Links: AlexDemo KBH SS Vo WKO1 talks

Sources: pensieve.

Some Feynman Diagrams in Pure Algebra

Max Planck Institute for Mathematics, Bonn, January 20, 2020, 4:30-5:30PM.

Abstract. I will explain how the computation of compositions of maps of a certain natural class, from one polynomial ring into another, naturally leads to a certain composition operation of quadratics and to Feynman diagrams. I will also explain, with very little detail, how this is used in the construction of some very well-behaved poly-time computable knot polynomials.

Joint work with Roland van der Veen.

Handout: FDA.html, FDA.pdf, FDA.png.

Talk Video (at UCLA).

Links: Ov akt hm sl2

Sources: pensieve.