Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The 2dF Galaxy Redshift Survey: Preliminary Results   Spectroscopic observations for a new survey of 250 000 galaxy redshifts are
underway, using the 2dF instrument at the AAT. The input galaxy catalogue and
commissioning data are described. The first result from the preliminary data is
a new estimate of the galaxy luminosity function at <z>=0.1.

37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th