Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Torsion Generators of the Twist Subgroup   We showed that the twist subgroup of the mapping class group of a closed
connected nonorientable surface of genus $g\geq13$ can be generated by two
involutions and an element of order $g$ or $g-1$ depending on whether $g$ is
odd or even respectively.

26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph