Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Automorphisms of the semigroup of invertible matrices with nonnegative
  elements over commutative partially ordered rings   Suppose that R is an ordered ring, G_n(R) is a subsemigroup of $GL_n(R)$,
consisting of all matrices with nonnegative elements. A.V. Mikhalev and M.A.
Shatalova described all automorphisms of G_n(R), where R is a linearly ordered
skewfield and n>1. E.I. Bunina and A.V. Mikhalev found all automorphisms of
G_n(R), if R is an arbitrary linearly ordered associative ring with 1/2, n>2.
In this paper we describe automorphisms of G_n(R), if R is a commutative
partially ordered ring, containing Q, n>2.

24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
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
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio