Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Demianski-Newman solution revisited   The derivation of the Demianski-Newman solution within the framework of the
Ernst complex formalism is considered. We show that this solution naturally
arises as a two-soliton specialization of the axisymmetric multi-soliton
electrovacuum metric, and we work out the full set of the corresponding
metrical fields and electromagnetic potentials. Some limits and physical
properties of the DN space-time are briefly discussed.

22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph