Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Orthogonality for $(0,-1)$ tropical normal matrices   We study pairs of mutually orthogonal normal matrices with respect to
tropical multiplication. Minimal orthogonal pairs are characterized. The
diameter and girth of three graphs arising from the orthogonality equivalence
relation are computed.

36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex