Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Monodromy transform approach in the theory of integrable reductions of
  Einstein's field equations and some applications   A brief sketch of the formulation of the monodromy transform approach and
corresponding integral equation methods as well as of various applications of
this approach for solution of integrable symmetry reductions of Einstein's
field equations is presented.

1
The categories of this paper are: cs
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org