Hall-Littlewood vertex operators and generalized Kostka polynomials

Details Hall-Littlewood vertex operators and generalized Kostka polynomials Hall-Littlewood vertex operators and generalized Kostka polynomials

2000-01-28

arxiv.org/abs/math/0001168v1

Mathematics

Quantum Algebra

17 pages

Scientific paper

A family of vertex operators that generalizes those given by Jing for the Hall-Littlewood symmetric functions is presented. These operators produce symmetric functions related to the Poincare polynomials referred to as generalized Kostka polynomials in the same way that Jing's operator produces symmetric functions related to Kostka-Foulkes polynomials. These operators are then used to derive commutation relations and new relations involving the generalized Kostka coefficients. Such relations may be interpreted as identities in the (GL(n) x C^*)-equivariant K-theory of the nullcone.

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