Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on the coupon - collector's problem with multiple arrivals and
  the random sampling   In this note we evaluate the expected waiting time to complete a collection
of coupons, in the case of coupons which arrives in groups of constant size,
independently and with unequal probabilities. As an application we will be able
to determine the expected number of samples of dimension g that we have to draw
independently in order to observe all the types of individuals in a given
population.

21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess