Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Efimov's effect for a model of a three particle discrete
  Shr\"odinger operator   In the paper we study existance of infinitly many egenvalues for a model of a
three particle discrete Shr\"odinger operator.

31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph