Date: Friday, March 31, 2017
Location: 4088 East Hall (3:10 PM to 4:00 PM)
Title: Deltamatroids and Vassiliev invariants
Abstract: Deltamatroids are matroidlike combinatorial structures introduced by A. Bouchet around 1980. The last decade saw a renewed interest in deltamatroids, thanks to a number of emerging applications.
I will discuss an appearance of deltamatroids 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 finiteorder link invariants and invariants of deltamatroids. This is joint work with V. Zhukov [arXiv:1602.00027].
Files:
Speaker: Sergei Lando
Institution: HSE Moscow & OSU
Event Organizer: Sergey Fomin
