Homology, Homotopy and Applications

Explicit fibrant replacement for discrete G-spectra

Daniel G. Davis

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If $C$ is the model category of simplicial presheaves on a site with enough points, with fibrations equal to the global fibrations, then it is well-known that the fibrant objects are, in general, mysterious. Thus, it is not surprising that, when $G$ is a profinite group, the fibrant objects in the model category of discrete $G$-spectra are also difficult to get a handle on. However, with simplicial presheaves, it is possible to construct an explicit fibrant model for an object in $C$, under certain finiteness conditions. Similarly, in this paper, we show that if $G$ has finite virtual cohomological dimension and $X$ is a discrete $G$-spectrum, then there is an explicit fibrant model for $X$. Also, we give several applications of this concrete model related to closed subgroups of $G$.

Article information

Homology Homotopy Appl., Volume 10, Number 3 (2008), 137-150.

First available in Project Euclid: 1 September 2009

Permanent link to this document

Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier

Primary: 55P42: Stable homotopy theory, spectra 55P91: Equivariant homotopy theory [See also 19L47]

Homotopy fixed points discrete G-spectrum homotopy limit


Davis, Daniel G. Explicit fibrant replacement for discrete G-spectra. Homology Homotopy Appl. 10 (2008), no. 3, 137--150. https://projecteuclid.org/euclid.hha/1251832470

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