Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some examples in the theory of Beurling's generalized prime numbers   Several examples of generalized number systems are constructed to compare
various conditions occurring in the literature for the prime number theorem in
the context of Beurling generalized primes.

31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th