Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Littelmann's path crystal and combinatorics of certain sl_{l+1}^ modules
  of level zero   We construct a subcrystal of the Littelmann's path crystal whose formal
character coincides with that of a certain simple integrable module of level
zero over the untwisted affine Lie algebra associated to sl_n. We also
establish an analogue of the Littlewood-Richardson rule for the tensor product
of that crystal with a highest weight crystal.

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The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: cs
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: nlin
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom