Polyhedral Realizations of Crystal Bases for Quantized Kac-Moody Algebras

Details Polyhedral Realizations of Crystal Bases for Quantized Kac-Moody Algebras Polyhedral Realizations of Crystal Bases for Quantized Kac-Moody Algebras

1997-03-28

arxiv.org/abs/q-alg/9703045v1

Mathematics

Quantum Algebra

24 pages, LaTeX

Scientific paper

Let B(\infty) be the crystal corresponding to the nilpotent part of a quantized Kac-Moody algebra. We suggest a general way to represent B(\infty) as the set of integer solutions of a system of linear inequalities. As an application, we treat in a unified manner all Kac-Moody algebras of rank 2 (sharpening the result by Kashiwara), as well as the algebras of types A_n and A_{n-1}^{(1)}.

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