Iterated homotopy fixed points for the Lubin-Tate spectrum, with an Appendix: An example of a discrete G-spectrum that is not hyperfibrant
Abstract
Description
When G is a profinite group and H and K are closed subgroups, with H normal in K, it is not known, in general, how to form the iterated homotopy fixed point spectrum (Z^{hH})^{hK/H}, where Z is a continuous G-spectrum and all group actions are to be continuous. However, we show that, if G=G_n, the extended Morava stabilizer group, and Z=L_{K(n)}(E_n \wedge X), where L_{K(n)} is Bousfield localization with respect to Morava K-theory, E_n is the Lubin-Tate spectrum, and X is any spectrum with trivial G_n-action, then the iterated homotopy fixed point spectrum can always be constructed. Also, we show that (E_n^{hH})^{hK/H} is just E_n^{hK}, extending a result of Devinatz and Hopkins.
26 pages; added appendix (joint), which gives an example of a non-hyperfibrant discrete G-spectrum; Thm. 7.6 added; expanded Section 3; discussion of utility of K/H-action on E_n^hH added to Intro
26 pages; added appendix (joint), which gives an example of a non-hyperfibrant discrete G-spectrum; Thm. 7.6 added; expanded Section 3; discussion of utility of K/H-action on E_n^hH added to Intro