Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New Extremal Binary Self-Dual Codes of Length 72 from
  $M_6(\mathbb{F}_2)G$ - Group Matrix Rings by a Hybrid Search Technique Based
  on a Neighbourhood-Virus Optimisation Algorithm
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph