# Reflection Groups in Types $A$ and $B$

## University of Minnesota, Twin Cities

Abstract

In the Minnesota Combinatorics group, at some point you will undoubtedly hear someone mention "other types". In this talk, I will explain what this phrase means, focusing specifically on "Type $A$" and "Type $B$". This is meant to be a talk friendly to beginning graduate students, and no background in combinatroics is required!