Biquandle brackets

09/22/2015 - 12:15pm
09/22/2015 - 1:10pm
Speaker: 
Sam Nelson (CMC)
Abstract: 

Given a finite biquandle X and a commutative ring with identity R, we define an algebraic structure known as a biquandle bracket. Biquandle brackets can be used to define a family of knot and link invariants known as quantum enhancements which include biquandle cocycle invariants and skein polynomials such as the Alexander, Jones and HOMFLYpt polynomials as special cases. As an application we will see a new skein invariant which is not determined by the knot group, the knot quandle or the HOMFLYpt polynomial.

Where: 
Millikan 2099, Pomona College