Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 1/N phenomenon for some symmetry classes of the odd alternating sign
  matrices   We consider the alternating sign matrices of the odd order that have some
kind of central symmetry. Namely, we deal with matrices invariant under the
half-turn, quarter-turn and flips in both diagonals. In all these cases, there
are two natural structures in the centre of the matrix. For example, for the
matrices invariant under the half-turn the central element is equal $\pm 1$. It
was recently found that $A^+_{HT}(2m+1)/A^-_{HT}(2m+1)$=(m+1)/m. We conjecture
that similar very simple relations are valid in the two remaining cases.

1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ