Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Crossing Number of the Cartesian Product of a Sunlet Graph and a
  Star Graph   The exact crossing number is only known for a small number of families of
graphs. Many of the families for which crossing numbers have been determined
correspond to cartesian products of two graphs. Here, the cartesian product of
the Sunlet graph, denoted $\mathcal{S}_n$, and the Star graph, denoted
$K_{1,m}$, is considered for the first time. It is proved that the crossing
number of $\mathcal{S}_n \Box K_{1,2}$ is $n$, and the crossing number of
$\mathcal{S}_n \Box K_{1,3}$ is $3n$. An upper bound for the crossing number of
$\mathcal{S}_n \Box K_{1,m}$ is also given.

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The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: nlin