W. Johnson

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math.RT2018

Exponential Hilbert series of equivariant embeddings

Wayne A. Johnson

In this article, we study properties of the exponential Hilbert series of a $G$ -equivariant projective variety, where $G$ is a semisimple, simply-connected complex linear algebraic…

math.RT2018

An orbit model for the spectra of nilpotent Gelfand pairs

Holley Friedlander, William Grodzicki, Wayne Johnson +4

Let $N$ be a connected and simply connected nilpotent Lie group, and let $K$ be a subgroup of the automorphism group of $N$ . We say that the pair $(K, N)$ is a nilpotent Gelfand pai…