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Finite generation for the K(n)-local sphere

OpenAI research collection · 1 manuscript · Source checked 2026-10-19

OpenAI's result summary

Answers the degreewise finiteness question of Hovey and Hovey–Strickland: every homotopy group of the K(n)-local sphere is a finitely generated ℤ_(p)-module, for every prime, positive height and integer degree. The same conclusion holds after K(n)-localizing any finite p-local spectrum.

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MANUSCRIPT 01

Finite generation for the K(n)-local sphere

We prove that the homotopy groups of the K(n)-local sphere are finitely generated ℤ_(p)-modules in every integer degree, for every prime p and positive height n. Equivalently, the same conclusion holds after K(n)-localizing any finite p-local spectrum. This answers the degreewise finiteness question of Hovey and…

Full source abstract

We prove that the homotopy groups of the K(n)-local sphere are finitely generated ℤ_(p)-modules in every integer degree, for every prime p and positive height n. Equivalently, the same conclusion holds after K(n)-localizing any finite p-local spectrum. This answers the degreewise finiteness question of Hovey and Hovey–Strickland.

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