Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Schur multipliers of unitriangular groups   An explicit formula for the Schur multiplier of the group of unitriangular
matrices over products of cyclic rings $\ZZ/m\ZZ$ and $\ZZ$ is derived. We use
it to provide presentations of the corresponding covering groups and touch upon
the question of finding their nonisomorphic representatives.

1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph