Proceedings of the Japan Academy, Series A, Mathematical Sciences

Realizing a complex of unstable modules

Abstract

In a preceding article~[7] the authors and Tran Ngoc Nam constructed a minimal injective resolution of the mod 2 cohomology of a Thom spectrum. A Segal conjecture type theorem for this spectrum was proved. In this paper one shows that the above mentioned resolutions can be realized topologically. In fact there exists a family of cofibrations inducing short exact sequences in mod 2 cohomology. The resolutions above are obtained by splicing together these short exact sequences. Thus the injective resolutions are realizable in the best possible sense. In fact our construction appears to be in some sense an injective closure of one of Takayasu. It strongly suggests that one can construct geometrically (not only homotopically) certain dual Brown-Gitler spectra.

Article information

Source
Proc. Japan Acad. Ser. A Math. Sci., Volume 87, Number 5 (2011), 83-87.

Dates
First available in Project Euclid: 26 April 2011

https://projecteuclid.org/euclid.pja/1303825552

Digital Object Identifier
doi:10.3792/pjaa.87.83

Mathematical Reviews number (MathSciNet)
MR2803896

Zentralblatt MATH identifier
1234.55012

Subjects
Primary: 55S10: Steenrod algebra 55T15: Adams spectral sequences
Secondary: 55P42: Stable homotopy theory, spectra

Citation

Nguyen Dang Ho, Hai; Schwartz, Lionel. Realizing a complex of unstable modules. Proc. Japan Acad. Ser. A Math. Sci. 87 (2011), no. 5, 83--87. doi:10.3792/pjaa.87.83. https://projecteuclid.org/euclid.pja/1303825552

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