Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rotating Kaluza-Klein Black Holes   All regular four-dimensional black holes are constructed in the theory
obtained by Kaluza-Klein reduction of five-dimensional Einstein gravity. They
are interpreted in string theory as rotating bound states of D0- and D6-branes.
Conservation of angular momentum is important for the stability of the bound
states. The thermodynamics, the duality symmetries, and the near-horizon limit
are explored.

28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio