Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: AstroSim: Collaborative Visualization of an Astrophysics Simulation in
  Second Life   We introduce AstroSim, a Second Life based prototype application for
synchronous collaborative visualization targeted at astronomers.

0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc