Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lp estimates for the Caffarelli-Silvestre extension operators   We study elliptic and parabolic problems governed by the singular elliptic
operators Delta_x+c\yD_y-b\y^2 on the half-space R^{N+1}_+.

31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
1
The categories of this paper are: cs