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

**Abstract.** I will explain how Feynman diagrams arise in pure
algebra: 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, and then with better detail, why I care about having such invariants.

Joint work with Roland van der Veen.

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

**Talk Video**: at UCLA-191101 and at Sydney-190916.

**Links:**
Vo
SS
ugly
Ov
akt
sl2
hm

**Sources:** pensieve.