Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Web-Schr\"odinger: Program for the interactive solution of the time
  dependent and stationary two dimensional (2D) Schr{\"o}dinger equation   Web-Schr{\"o}dinger is an interactive client-server software for the solution
of the time-dependent and time-independent (stationary) Schr{\"o}dinger
equation. The program itself runs on a server computer and can be used through
the Internet with a simple Web browser. Nothing is installed on the user's
computer. The user can load, run, and modify ready-made example files, or
prepare her/his own configuration(s), which can be saved on her/his own
computer for later use. Several users can access the program parallelly and
each can have independent sessions. Typical run times are in the second, or
minute range.

16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
2
The categories of this paper are: math