Introduction to quiver varieties -- for ring and representation theoriests
arXiv:1611.10000
Abstract
We review the definition of quiver varieties and their relation to representation theory of Kac-Moody Lie algebras. Target readers are ring and representation theorists. We emphasize important roles of first extension groups of the preprojective algebra associated with a quiver.
19 pages, to appear in the proceeding of 49th Symposium on Ring Theory and Representation Theory at Osaka Prefecture University, 2016 Summer