Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The equivariant K- and KO-theory of certain classifying spaces via an
  equivariant Atiyah-Hirzebruch spectral sequence   Computation of the K- and KO-theory for the classifying G-spaces for proper
actions of certain infinite discrete groups G via a special version of the
equivariant Atiyah- Hirzebruch spectral sequence.

23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ