Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anti-de Sitter-type 2+1 spacetime of a charged rotating mass   The exact charged rotating solution of 2+1 Einstein-Maxwell equations with
$\Lambda$ term is obtained and its properties outlined. It generalizes the
Cataldo-Cruz-del Campo-Garc{\'\i}a relativistic charged massive black hole on
the 2+1 anti-de Sitter cosmological background. We show that rotating solutions
correspond to inhomogeneous field equations, thus presence of sources in 2+1
Maxwell's equations cannot be identified with existence of a charge
distribution. Instead, these sources are related to the 2+1 Machian 2-form
field, and the overall Lagrangian structure of the rotating system is
reconstructed.

32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat