Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A boundary value problem for the five-dimensional stationary rotating
  black holes   We study the boundary value problem for the stationary rotating black hole
solutions to the five-dimensional vacuum Einstein equation. Assuming the two
commuting rotational symmetry and the sphericity of the horizon topology, we
show that the black hole is uniquely characterized by the mass, and a pair of
the angular momenta.

25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an