Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Regularity for fully nonlinear elliptic equations with oblique boundary
  conditions   In this paper, we obtain a series of regularity results for viscosity
solutions of fully nonlinear elliptic equations with oblique derivative
boundary conditions. In particular, we derive the pointwise $C^{\alpha}$,
$C^{1,\alpha}$ and $C^{2,\alpha}$ regularity. As byproducts, we also prove the
A-B-P maximum principle, Harnack inequality, uniqueness and solvability of the
equations.

30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph