Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A six dimensional analysis of Maxwell's Field Equations   A framework based on an extension of Kaluza's original idea of using a five
dimensional space to unify gravity with electromagnetism is used to analyze
Maxwell\'{}s field equations. The extension consists in the use of a six
dimensional space in which all equations of electromagnetism may be obtained
using only Einstein's field equation. Two major advantages of this approach to
electromagnetism are discussed, a full symmetric derivation for the wave
equations for the potentials and a natural inclusion of magnetic monopoles
without using any argument based on singularities.

8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th