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Abstract. I will construct the first poly-time-computable knot polynomial since Alexander's (1928) by 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.