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Refined q-trinomial coefficients and character identities

S. Ole Warnaar

math.QAarXiv:math/0005123

Abstract

A refinement of the q-trinomial coefficients is introduced, which has a very powerful iterative property. This ``T-invariance'' is applied to derive new Virasoro character identities related to the exceptional simply-laced Lie algebras E6,E7 and E8.

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