Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Singular Graphs with Dihedral Group Action   Let $\Gamma$ be a simple undirected graph on a finite vertex set and let $A$
be its adjacency matrix. Then $\Gamma$ is {\it singular} if $A$ is singular.
The problem of characterising singular graphs is easy to state but very
difficult to resolve in any generality. In this paper we investigate the
singularity of graphs for which the dihedral group acts transitively on
vertices as a group of automorphisms.

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The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: physics
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The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol