Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The number of rhombus tilings of a symmetric hexagon which contain a
  fixed rhombus on the symmetry axis, II   We compute the number of rhombus tilings of a hexagon with side lengths
N,M,N,N,M,N, with N and M having the same parity, which contain a particular
rhombus next to the center of the hexagon. The special case N=M of one of our
results solves a problem posed by Propp. In the proofs, Hankel determinants
featuring Bernoulli numbers play an important role.

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The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
16
The categories of this paper are: stat
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
3
The categories of this paper are: physics
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The categories of this paper are: eess
0
The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con