Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Variational framework and Lewy-Stampacchia type estimates for nonlocal
  operators on Heisenberg group   The aim of this article is to derive some Lewy-Stampacchia estimates and
existence of solutions for equations driven by a nonlocal integro-differential
operator on the Heisenberg group.

35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph