Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimates for norms of two-weighted summation operators on trees for
  $1<p<q<\infty$   In this paper, estimates for norms of weighted summation operators (discrete
Hardy-type operators) on a tree are obtained for $1<p<q<\infty$ and for
arbitrary weights and trees.

26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th