Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Polychromatic Number of Small Subsets of the Integers Modulo $n$   If $S$ is a subset of an abelian group $G$, the polychromatic number of $S$
in $G$ is the largest integer $k$ so that there is a $k-$coloring of the
elements of $G$ such that every translate of $S$ in $G$ gets all $k$ colors. We
determine the polychromatic number of all sets of size 2 or 3 in the group of
integers mod n.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: physics
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The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga