Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The automorphism group of the group of unitriangular matrices over a
  field   This paper finds the generators of the automorphism group of the group of
unitriangular matrices over a field. Most of this paper is an exposition of the
work of V.M. Lev\u{c}huk, part of which is in Russian. Some proofs are of my
own.

37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th