Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Abelian permutation groups with graphical representations   In this paper we characterize permutation groups that are automorphism groups
of coloured graphs and digraphs and are abelian as abstract groups. This is
done in terms of basic permutation group properties. Using Schur's classical
terminology, what we provide is characterizations of the classes of 2-closed
and $2*$-closed abelian permutation groups. This is the first characterization
concerning these classes since they were defined.

27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int