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Hovey-Strickland finite-generation question: are the homotopy groups of the K(n)K(n)-local sphere finitely generated over Zp\mathbb Z_p?

Theorem 1.1: for every prime pp, height n≥1n\ge1 and integer tt, πtLK(n)Sp∧\pi_t L_{K(n)}S_p^\wedge is a finitely generated Zp\mathbb Z_p-module; equivalently πtLK(n)F\pi_t L_{K(n)}F is finitely generated for every finite pp-local spectrum FF. Combined with the rational computation of Barthel-Schlank-Stapleton-Weinstein this fixes the free ranks. The key step is finiteness of continuous cohomology of the stabilizer with mod pp Lubin-Tate coefficients. It gives no bound on the number of generators or the torsion as pp, nn, tt vary, computes no torsion, and does not extend to all invertible K(n)K(n)-local spectra (known to fail at height two).

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Prior state unknown→proved

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Occurred: Sep 24, 2026

Delta type: SOURCE CLAIM

Assumptions: VibeMathed verification: unreviewed. Publication: announcement. AI contribution: ai-discovered. VibeMathed editorial classifications, scores, notes, relations, and dataset structure are CC BY 4.0. Source statements and linked content retain their own rights.

Canonical aliases: Hovey-Strickland finite-generation question: are the homotopy groups of the $K(n)$-local sphere finitely generated over $\mathbb Z_p$? · Finite generation of the K(n)-local sphere

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Hovey-Strickland finite-generation question: are the homotopy groups of the K(n)K(n)-local sphere finitely generated over Zp\mathbb Z_p? evidence for this event

Hovey-Strickland finite-generation question: are the homotopy groups of the K(n)K(n)-local sphere finitely generated over Zp\mathbb Z_p? parent of this event

Theorem 1.1: for every prime pp, height n≥1n\ge1 and integer tt, πtLK(n)Sp∧\pi_t L_{K(n)}S_p^\wedge is a finitely generated Zp\mathbb Z_p-module; equivalently πtLK(n)F\pi_t L_{K(n)}F is finitely generated for every finite pp-local spectrum FF. Combined with the rational computation of Barthel-Schlank-Stapleton-Weinstein this fixes the free ranks. The key step is finiteness of continuous cohomology of the stabilizer with mod pp Lubin-Tate coefficients. It gives no bound on the number of generators or the torsion as pp, nn, tt vary, computes no torsion, and does not extend to all invertible K(n)K(n)-local spectra (known to fail at height two). parent of this event

VibeMathed record: Hovey-Strickland finite-generation question: are the homotopy groups of the K(n)K(n)-local sphere finitely generated over Zp\mathbb Z_p? evidence for this event

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