Topology Seminar

Pre-talk: SAS 2229 2-2:45 Title: The knot concordance group Abstract: The set of knots in S^3 under the operation of connected sum forms a monoid. By quotienting by an equivalence relation called concordance, we obtain the knot concordance group. We will … Read more

Title: A Poly-Time Knot Polynomial Via Solvable Approximation 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 … Read more