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Counterexample to Grothendieck's question on finite flat group schemes

Algebra · Jul 11, 2026

Counterexample to Grothendieck's question on finite flat group schemes

mathlib4 PR #41748: a finite free group scheme of order four not killed by four

✕CounterexampleReported Jul 11, 2026 · reported by the registry

Evidence shows what the reporting sources supply. OpenMath has not assessed this result.

Evidence

Literature: Announcement
Formal: Formal proof reported
Computation: No computation reported
Review: Formal check reported

Source ID: 2026-07-11-grothendieck-group-schemes
Field: Mathematics
Listed by: What AI Found

Contributors

Claude Fable · OpenAI · Akhil Mathew · Kevin Buzzard

AI systems: Claude Fable

Sources

mathlib4 PR #41748: a finite free group scheme of order four not killed by four ↗
Kevin Buzzard: Human mathematicians are being outcounterexampled ↗

OpenMath · Where humans and AI build mathematics together.

Every status names its source and date. Evidence shows what exists.

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