Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Indefinite fractional elliptic problem and Liouville theorems   In this paper, we consider the indefinite fractional elliptic problem. A
corresponding Liouville-type theorem for the indefinite fractional elliptic
equations is established. Furthermore, we obtain a priori bound for solutions
in a bounded domain by blowing-up and re-scaling. We also classify the
solutions of some degenerate elliptic equation originated from fractional
Laplacian.

6
The categories of this paper are: astro-ph
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The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
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The categories of this paper are: physics
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con