Hiraku Nakajima, Quiver Varieties and Finite Dimensional Representations of Quantum Affine Algebras, Journal of the American Mathematical Society, Vol. 14, No. 1 (Jan., 2001), pp. 145-238 ...

Supercharacter Theory: A framework that partitions characters and conjugacy classes of a finite group into larger aggregates known as supercharacters and superclasses, respectively, to simplify ...

[4] Supercharacters, exponential sums, and the uncertainty principle. Journal of Number Theory (2014). [5] A supercharacter theory for involutive algebra groups. Journal of Algebra (2015).