Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the minimal positive standardizer of a parabolic subgroup of an
  Artin-Tits group   The minimal standardizer of a curve system on a punctured disk is the minimal
braid that transforms it into a system formed only by round curves. We give an
algorithm to compute it in a geometrical way. Then, we generalize this problem
algebraically to parabolic subgroups of Artin-Tits groups of spherical type and
we show that, to compute the minimal standardizer of a parabolic subgroup, it
suffices to compute the $pn$-normal form of a particular central element.

1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph