Starting categorically, we give simple and precise models for classifying spaces of equivariant principal bundles. We need these models for work in progress in equi- variant 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.

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Published in Algebraic & Geometric Topology, v. 17, issue 5, p. 2565-2602.

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Guillou was partially supported by Simons Collaboration Grant No. 282316 and by NSF grant DMS-1710379 and Merling was partially supported by NSF grant DMS-1709461.

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