Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Differences of Riesz Homomorphisms   An order bounded functional on a Riesz space is a difference of Riesz
homomorphisms if and only if the kernel of this functional is a Riesz subspace
of the ambient Riesz space.

7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn