Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the classification of weighing matrices and self-orthogonal codes   We provide a classification method of weighing matrices based on a
classification of self-orthogonal codes. Using this method, we classify
weighing matrices of orders up to 15 and order 17, by revising some known
classification. In addition, we give a revised classification of weighing
matrices of weight 5. A revised classification of ternary maximal
self-orthogonal codes of lengths 18 and 19 is also presented.

13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
3
The categories of this paper are: physics