Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Octonionic formulation of the fully symmetric Maxwell's equations in 3+1
  dimensions   Using octonions, more specifically, using a 4 x 4 matrix representation of
octonions obtained with the help of algebraic properties of quaternions, we
obtain the fully symmetric Maxwell's equations (Maxwell's equations with
electric and magnetic charges and currents which is invariant under duality
transformations).

25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int