BIMSA > Group Meeting on Algebraic Topology and Its Applications Group Meeting on Algebraic Topology and Its Applications New approaches to Lie algebra weight systems
New approaches to Lie algebra weight systems
Organizers
Fengchun Lei , Jingyan Li , Yangyang Ruan , Jie Wu
Speaker
Zhuoke Yang
Time
Wednesday, June 18, 2025 1:00 PM - 2:00 PM
Venue
A3-1a-205
Online
Zoom 435 529 7909 (BIMSA)
Abstract
To a finite type knot invariant, a weight system can be associated, which is a function on chord diagrams satisfying so-called 4-term relations. In particular, a weight system can be associated to any metrized Lie algebra. We extend these Lie algebra weight systems to permutations and provide an recursion for its computation.