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The equivariant structure of Eilenberg-Mac Lane spaces. I. The -torsion free case
Journal article   Open access

The equivariant structure of Eilenberg-Mac Lane spaces. I. The -torsion free case

Proceedings of the American Mathematical Society, v 101(4), pp 731-737
01 Jan 1987
url
https://doi.org/10.1090/s0002-9939-1987-0911042-5View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze) Open
url
https://doi.org/10.1090/S0002-9939-1987-0911042-5View
Published, Version of Record (VoR) Open

Abstract

The purpose of this paper is to continue the work begun in [ 7 ]. That paper described an obstruction theory for topologically realizing an (equivariant) chain-complex as the equivariant chain-complex of a CW-complex. The obstructions essentially turned out to be homological k k -invariants of Eilenberg-Mac Lane spaces and the key to their computation consists in developing tractable models for the chain-complexes of these spaces. The present paper constructs such a model in the Z {\mathbf {Z}} -torsion free case. The model is sufficiently simple that in some cases it is possible to simply read off homological k k -invariants, and thereby derive some topological results.

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