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Combinatorics of the $\hat{sl}_2$ Spaces of Coinvariants

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arxiv math-ph/9908003 v4 pith:SUJVIUK6 submitted 1999-08-02 math-ph math.MPmath.QAmath.RT

classification math-phmath.MPmath.QAmath.RT
keywords spacescoinvariantsbasescharactersmonomialalgebracombinatoricsconsider
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abstract

We consider two types of quotients of the integrable modules of $\hat{sl}_2$. These spaces of coinvariants have dimensions described in terms of the Verlinde algebra of level-$k$. We describe monomial bases for the spaces of coinvariants, which leads to a fermionic description of these spaces. For $k=1$, we give the explicit formulas for the characters. We also present recursion relations satisfied by the characters and the monomial bases.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Leading Terms of Relations on a Level 5 Module over the Twisted Affine Lie Algebra $A_2^{(2)}$

    math.CO 2025-11 conditional novelty 5.0 of 10

    The partial partition conditions for level 5 A2^(2) L(5Λ0) match the specialized character through q^41, miss one partition each at q^42 and q^48, and differ from the Borcea-dual A1^(1) level 2 identity.

  2. Linear Independence for $A_1^{(1)}$ by Using $C_{2}^{(1)}$

    math.QA 2025-04 conditional novelty 4.0 of 10

    The authors prove, via an embedding into C_2^(1) and an intertwining operator, that the combinatorial monomial basis of every standard A_1^(1) module is linearly independent.

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