Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local redshift surveys and galaxy evolution   We present observations of galaxy environmental dependencies using data from
the 2dF Galaxy Redshift Survey. From a combined analysis of the luminosity
function, Butcher-Oemler effect and trends in H$\alpha$ line strengths we find
support for a model where galaxy properties are mainly set by initial
conditions at the time of their formation.

1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas