Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On $l^p$ norms of factorable matrices   We study $l^p$ operator norms of factorable matrices and related results. We
give applications to $l^p$ operator norms of weighted mean matrices and
Copson's inequalities. We also apply the method in this paper to study the best
constant in an inequality of Hardy, Littlewood and P\'{o}lya.

17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph