Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the orbital period distribution of cataclysmic variables   Using the latest compilation of cataclysmic variable orbital periods by
Ritter & Kolb we argue against Verbunt's conclusion that the period gap is not
significant for nova-like variables. We also discuss the relation of the VY Scl
stars to the dwarf novae.

3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg