Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pattern Recognition on Oriented Matroids: Decompositions of Topes, and
  Dehn-Sommerville Type Relations   If V(R) is the vertex set of a symmetric cycle R in the tope graph of a
simple oriented matroid M, then for any tope T of M there exists a unique
inclusion-minimal subset Q(T;R) of V(R) such that T is the sum of the topes of
Q(T;R).
  If |Q(T;R)|>3, then the decomposition Q(T;R) of the tope T with respect to
the symmetric cycle R satisfies certain Dehn-Sommerville type relations.

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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
1
The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-th