Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Categorical models for equivariant classifying spaces   Starting categorically, we give simple and precise models of equivariant
classifying spaces. We need these models for work in progress in equivariant
infinite loop space theory and equivariant algebraic K-theory, but the models
are of independent interest in equivariant bundle theory and especially
equivariant covering space theory.

1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex