Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Positive solutions of nonlinear integral equations and surjectivity of
  Non-Linear Markov Operators On Infinite Dimensional Simplex   In the present paper, we consider the solvability of positive solutions of
nonlinear integral equations by means of investigating non-linear Markov
operators. To solve the problem we find necessary and sufficient condition for
the surjectivity of nonlinear Markov operators.

7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph