Source authenticated

Crouzeix's Conjecture

Two independent proofs within eight days, both with AI in the loop. Jin's (posted 27 July, preprints.org, submitted to Annals) is the first: its decisive theorem came out of an autonomous GPT-5.6 Sol run, and it is the proof Townsend, Greenbaum and Crouzeix have checked. Lorist and Schwenninger's five-page argument (arXiv, 4 August) is a genuinely different route - double-layer potentials plus a perturbation lemma for 2-dilations - produced with ChatGPT 5.6 Pro exploring proof strategies. The entry's headline axes record Jin's proof; the earlier version of this entry recorded Lorist-Schwenninger's as primary while Jin's AI provenance was still unknown. The complete (matrix-coefficient) form, which contains this scalar theorem as the case m = 1, is claimed in the OpenAI math release (September 2026); see complete-crouzeix-conjecture.

Exact FrontierDelta

proved→proved

Scope and record

Occurred: Oct 29, 2026

Delta type: REGISTRY REVISION

Assumptions: VibeMathed verification: expert-verified. Publication: preprint. 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: Crouzeix's Conjecture

Confidence: Not scored

Registry verification: expert verified · preprint · resolved

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Attribution

VibeMathed
registry · event recorded by

GPT-5.6 Sol
model · ai model contributor · OpenAI

ChatGPT 5.6 Pro
model · ai model contributor · OpenAI

Shanmu Jin
human · human collaborator

Emiel Lorist
human · human collaborator

Felix L. Schwenninger
human · human collaborator

Artifacts and verifiers

Jin's repository: prompt, successive manuscripts, Lean formalization, axiom audit

code · pending

Artifact ↗

Compute record

No linked compute attempts recorded.

Lineage and corrections

Corrects Crouzeix's Conjecture →

Supersedes Crouzeix's Conjecture →

AIM workshop on Crouzeix's conjecture (2017) evidence for this event

Wikipedia: Crouzeix's conjecture evidence for this event

VibeMathed record: Crouzeix's Conjecture evidence for this event

Lorist-Schwenninger Remark 2 positivity question evidence for this event

This event attributed to Shanmu Jin

This event attributed to Felix L. Schwenninger

Crouzeix's Conjecture evidence for this event

Townsend and Greenbaum, The Neurosurgery Resident Who Proved Crouzeix's Conjecture (14 Aug 2026) evidence for this event

Stronger result in the OpenAI math release evidence for this event

Crouzeix's Conjecture parent of this event

This event attributed to GPT-5.6 Sol

This event attributed to ChatGPT 5.6 Pro

Jin's repository: prompt, successive manuscripts, Lean formalization, axiom audit evidence for this event

This event attributed to Emiel Lorist

Two independent proofs within eight days, both with AI in the loop. Jin's (posted 27 July, preprints.org, submitted to Annals) is the first: its decisive theorem came out of an autonomous GPT-5.6 Sol run, and it is the proof Townsend, Greenbaum and Crouzeix have checked. Lorist and Schwenninger's five-page argument (arXiv, 4 August) is a genuinely different route - double-layer potentials plus a perturbation lemma for 2-dilations - produced with ChatGPT 5.6 Pro exploring proof strategies. The entry's headline axes record Jin's proof; the earlier version of this entry recorded Lorist-Schwenninger's as primary while Jin's AI provenance was still unknown. The complete (matrix-coefficient) form, which contains this scalar theorem as the case m = 1, is claimed in the OpenAI math release (September 2026); see complete-crouzeix-conjecture. parent of this event

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