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The A_{2n}^{(2)} Rogers-Ramanujan identities (1309.5216v2)
Published 20 Sep 2013 in math.CO, math.NT, and math.RT
Abstract: The famous Rogers-Ramanujan and Andrews--Gordon identities are embedded in a doubly-infinite family of Rogers-Ramanujan-type identities labelled by positive integers m and n. For fixed m and n the product side corresponds to a specialised character of the affine Kac-Moody algebra A_{2n}{(2)} at level m, and is expressed as a product of n2 theta functions of modulus 2m+2n+1, or by level-rank duality, as a product of m2 theta functions. Rogers-Ramanujan-type identities for even moduli, corresponding to the affine Lie algebras C_n{(1)} and D_{n+1}{(2)}, are also proven.