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Comet Calendar Event Details
Algebra and Combinatorics Seminar by Nathan Williams
Friday, Oct 20
10 a.m. - 11 a.m. Location: FO 2.208

Nathan Williams

Mathematical Sciences

UT Dallas

Why the Fuss?

Spherical Artin groups (like braid groups) have two surprisingly different -- but equally natural--presentations. Briefly, their classical presentation arises from the chamber geometry their associated Coxeter group enjoys as a real reflection group, while their more recent dual presentation comes from interpreting the Coxeter group as a complex reflection group. In this dual presentation, certain elements of the Artin group are singled out, and these elements lead to a beautiful enumerative theory. In this talk, I will present work with C. Stump and H. Thomas that identifies a corresponding theory in the classical presentation.

Contact Info:
Carlos Arreche, 972-883-6594
Questions? Email me.

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