Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two Identities   In the process of studying a conjecture of Holly M. Green and Martin W.
Liebeck, we obtain two interesting identities by elementary methods, one is a
combinatorial identity, and the other is a number theoretic identity.

23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess