Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Congruence covers of triangular modular curves and their Galois groups   This article computes the Galois groups of congruence covers arising in the
context of certain hyperbolic triangle groups. As a consequence of this
computation, the genera of the respective curves are deduced.

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The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
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The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
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The categories of this paper are: cs
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
28
The categories of this paper are: alg-geom
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The categories of this paper are: econ
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin