Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Boundedness of the gradient of a solution to the Neumann-Laplace problem
  in a convex domain   It is shown that solutions of the Neumann problem for the Poisson equation in
an arbitrary convex $n$-dimensional domain are uniformly Lipschitz.
Applications of this result to some aspects of regularity of solutions to the
Neumann problem on convex polyhedra are given.

15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph