The Topology & Geometry seminar meets on Tuesdays at 13:00 at room 70 in the Ross Building.

2019
Dec
31

# T&G: Dror Bar-Natan (Toronto), Some Feynman Diagrams in Pure Algebra

11:00am to 12:30pm

## Location:

Room 70, Ross Building, Jerusalem, Israel

I will explain how Feynman diagrams arise in purealgebra: how the computation of compositions of maps of a certain naturalclass, from one polynomial ring into another, naturally leads to a certaincomposition operation of quadratics and to Feynman diagrams.

I will also explain, with very little detail, how this is used inthe construction of some very well-behaved poly-time computable knotpolynomials, and then with better detail, why I care about having suchinvariants.

Joint work with Roland van der Veen.

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