Kuhn's dichotomy conjecture for the functors associated to unstable cohomology

Let XX be a space. For each ss, let Rs(HX)R_s(H^*X) denote the analytic functor associated with the reduced unstable module Rs(HX)R_s(H^*X). Kuhn's dichotomy conjecture. Either at least one of the functors Rs(HX)R_s(H^*X) has an infinite Loewy (socle) series whose composition factors are unbounded in degree, or all the functors Rs(HX)R_s(H^*X) are constant. In terms of unstable modules, this would imply that at least one corresponding unstable module has infinitely many generators. The conjecture is stated as a reformulation of the most general form of Kuhn's conjecture, and the paper gives no resolution.

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Primary source

Lionel Schwartz, “La filtration de Krull de la categorie U et la cohomologie des espaces”, arXiv:math/0110230 (2001).

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