Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Lanczos Potential for Bianchi Spacetime   The form and application of the Lanczos potential for Bianchi spacetime are
studied. The Lanczos potential is found in some specific cases then the general
case studied. It leads to two coupled first order partial differential
equations which although they so far have not been solved in general can be
solved for many configurations. The application is to cosmic energetics: in
other words to the study of the energy of the gravitational and other fields in
the Universe.

1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph