Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unitary Integrals and Related Matrix Models   Concise review of the basic properties of unitary matrix integrals. They are
studied with the help of the three matrix models: the ordinary unitary model,
Brezin-Gross-Witten model and the Harish-Charndra-Itzykson-Zuber model.
Especial attention is paid to the tricky sides of the story, from De
Wit-t'Hooft anomaly in unitary integrals to the problem of correlators with
Itzykson-Zuber measure. Of technical tools emphasized is the method of
character expansions. The subject of unitary integrals remains highly
under-investigated and a lot of new results are expected in this field when it
attracts sufficient attention.

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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: hep-lat