© | << < ? > >> | Dror Bar-Natan: Talks: | Links: Big Demo Exp K17 KBH LD Ov PP Ro |

**Abstract.** Rozansky [Ro] and Overbay [Ov] described a spectacular knot polynomial that failed to
attract the attention it deserved as the first poly-time-computable knot
polynomial since Alexander's (1928) and (in my opinion) as the second
most likely knot polynomial (after Alexander's) to carry topological
information. With Roland van der Veen, I will explain how to compute
the Rozansky polynomial using some new commutator-calculus techniques
and a Lie algebra ${\mathfrak g}_1$ which is at the same time solvable and an
approximation of the simple Lie algebra $sl_2$.

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

**Sources:** pensieve.