Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From totally nonnegative matrices to quantum matrices and back, via
  Poisson geometry   In this survey article, we describe recent work that connects three separate
objects of interest: totally nonnegative matrices; quantum matrices; and matrix
Poisson varieties.

12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin