Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Singular quasilinear convective elliptic systems in $R^N$   The existence of a positive entire weak solution to a singular quasi-linear
elliptic system with convection terms is established, chiefly through
perturbation techniques, fixed point arguments, and a priori estimates. Some
regularity results are then employed to show that the obtained solution is
actually strong.

1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex