Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Review on the astronomical estimators of number of flare stars   Review is devoted to estimators (introduced in astronomy by famous astronomer
Ambartsumian and his followers) that are used to estimating the unknown number
of flare stars and other randomly flashing objects (stars with X-ray flares,
solar type stars with superflares). Some important astronomical applications of
them are presented. The development of these methods in astronomy have
proceeded regardless of development of analogous methods of mathematical
statistics. Brief history of this development and parallels with similar
statistical methods is presented.

17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics