Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A universal formula for the volume of compact Lie groups   We provide a closed formula for the volume of a simple compact Lie group in
terms of the universal Vogel parameters. For the unitary groups SU_n this
reduces to the integral representation of the classical Barnes G-function.

20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex