Generalized Andrews-Gordon Identities

Abstract

In a recent paper, Griffin, Ono and Warnaar present a framework for Rogers-Ramanujan type identities using Hall-Littlewood polynomials to arrive at expressions of the form \[\sum_{λ: λ_1 \leq m} q^{a|λ|}P_{2λ}(1,q,q^2,\ldots ; q^{n}) = \text{"Infinite product modular function"}\] for $a=1,2$ and any positive integers $m$ and $n$. A recent paper of Rains and Warnaar presents further Rogers-Ramanujan type identities involving sums of terms $q^{|\hat{I}»|/2}{P}_{\hat{I}}»(1,q,q^2,\dots ;q^n)$. It is natural to attempt to reformulate these various identities to match the well-known Andrews-Gordon identities they generalize. Here, we find combinatorial formulas to replace the Hall-Littlewood polynomials and arrive at such expressions.