Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Harer--Zagier recursion for an irregular spectral curve   We derive the Do and Norbury recursion formula for the one-loop mean of an
irregular spectral curve from a variant of replica method by Brez\'in and
Hikami. We express this recursion in special times in which all terms
$W_1^{(g)}$ of the genus expansion of the one-loop mean are polynomials. We
find a generalization of this recursion to the generalized Laguerre polynomial
case.

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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: cond-mat
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: physics
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an