Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The structure of alternative tableaux   In this paper we study alternative tableaux introduced by Viennot. These
tableaux are in simple bijection with permutation tableaux, defined previously
by Postnikov . We exhibit a simple recursive structure for alternative
tableaux. From this decomposition, we can easily deduce a number of enumerative
results. We also give bijections between these tableaux and certain classes of
labeled trees. Finally, we exhibit a bijection with permutations, and relate it
to some other bijections that already appeared in the literature.

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The categories of this paper are: econ
28
The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
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The categories of this paper are: cs
29
The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-ex