Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Twelve-dimensions theory in electromagnetic dynamics as a hypothesis   We propose a theory in electromagnetic dynamics, in which time and space are
equivalent with each other and have totally twelve dimensions. Then, we solve
that with realistic assumptions and find a steady state as a solution. The
solution draws a circle in complex space having six dimensions as a closed
string, which is an orbit passed by waves of two scalar fields having electric
and magnetic characters, respectively. We also discuss a possibility of
existing solutions of electromagnetic waves.

9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
18
The categories of this paper are: econ