Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The unicyclic graphs with the second smallest normalized Laplacian
  eigenvalue no less than $1-\frac{\sqrt{6}}{3}$   Let $\lambda_{2}(G)$ be the second smallest normalized Laplacian eigenvalue
of a graph $G$. In this paper, we determine all unicyclic graphs of order
$n\geq21$ with $\lambda_{2}(G)\geq 1-\frac{\sqrt{6}}{3}$. Moreover, the
unicyclic graphs with $\lambda_{2}(G)=1-\frac{\sqrt{6}}{3}$ are also
determined.

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The categories of this paper are: astro-ph
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
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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: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph