Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Classifying edge-biregular maps of negative prime Euler characteristic   An edge-biregular map arises as a smooth normal quotient of a unique
index-two subgroup of a full triangle group acting with two edge-orbits. We
give a classification of all finite edge-biregular maps on surfaces of negative
prime Euler characteristic.

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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: q-bio
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn