Seminar Event Detail


Combinatorics

Date:  Friday, March 31, 2017
Location:  4088 East Hall (3:10 PM to 4:00 PM)

Title:  Delta-matroids and Vassiliev invariants

Abstract:   Delta-matroids are matroid-like combinatorial structures introduced by A. Bouchet around 1980. The last decade saw a renewed interest in delta-matroids, thanks to a number of emerging applications.

I will discuss an appearance of delta-matroids in the context of knot theory. Vassiliev's theory of knot invariants of finite order provides a way to construct knot invariants from certain invariants of graphs. I will describe a similar relationship between finite-order link invariants and invariants of delta-matroids. This is joint work with V. Zhukov [arXiv:1602.00027].

Files:


Speaker:  Sergei Lando
Institution:  HSE Moscow & OSU

Event Organizer:   Sergey Fomin   

 

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