Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conjugacy of Levi subgroups of reductive groups and a generalization to
  linear algebraic groups   We investigate Levi subgroups of a connected reductive algebraic group G,
over a ground field K. We parametrize their conjugacy classes in terms of sets
of simple roots and we prove that two Levi K-subgroups of G are rationally
conjugate if and only if they are geometrically conjugate.
  These results are generalized to arbitrary connected linear algebraic
K-groups. In that setting the appropriate analogue of a Levi subgroup is
derived from the notion of a pseudo-parabolic subgroup.

23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio