Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Towards non commutative algebraic topology   This is a slightly edited version of the transparencies for a seminar at UCL,
May 7, 2003. It is intended to give a quick view of background, ideas, and some
calculations, in the applicatioon of some non commutative methods to algebraic
topology.

4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio