Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the N-dimensional hydrogen atom in momentum representation   We derive the wave function for N-dimensional hydrogen atom in the momentum
representation with the phase factor using the generating function method and
Hankel's integral.

19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom