Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Third Stromlo Symposium - The Galactic Halo: Bright Stars and Dark
  Matter   This summary discribes the highlights of the Third Stromlo Symposium, on the
nature of the stellar, gaseous, and dark components of the Galactic Halo.

9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat