Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectrum of some arrow-bordered circulant matrix   Given a circulant matrix $\mathrm{circ}(c,a,0,0,...,0,a)$, $a\ne 0$, of
order~$n$, we ``border'' it from left and from above by constant column and
row, respectively, and we set the left top entry to be $-nc$. This way we get
a~particular title object, an example of what we call an \textit{abc matrix\/},
or an \textit{arrow-bordered circulant (matrix)\/}. We find its eigenpairs and
we discuss its spectrum with stress on extreme eigenvalues and their bounds. At
last we notice its relation to a~weighted wheel graph

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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
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The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
3
The categories of this paper are: physics
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The categories of this paper are: dg-ga
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: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: econ