OpenAI reports the generalized Mukai conjecture

Every positive-dimensional smooth complex Fano manifold of dimension n, Picard number rho, and pseudoindex iota satisfies rho(iota - 1) <= n; equality holds exactly for a product of rho copies of projective space of dimension iota - 1.

Sources for this record

What was already known

The bound and equality classification were established in low dimensions, for toric and spherical Fano classes, and under high-pseudoindex assumptions, but not for arbitrary smooth Fano manifolds (manuscript introduction, p. 2).

AI involvement AI-led

OpenAI credits itself as manuscript author and states that its internal frontier model produced the results in this release. Individual human input is not detailed enough to establish task-only autonomy.

OpenAI is named as author on the manuscript, and its release attributes the results to an internal frontier model. The individual human input is not detailed enough to establish autonomy.

Importance Major

Resolves the generalized Mukai inequality and its equality classification for all smooth complex Fano manifolds.

Limitations

The claim concerns smooth complex projective Fano manifolds; it does not extend to singular Fano varieties.

Technical verification Reported

Reported is the default when evidence for a higher level is insufficient. The OpenAI-authored manuscript reports and argues the result, but the reviewed sources do not document a completed check of the full assessed claim.

Human understanding Few

Few is the default when evidence for a higher level is insufficient. No named person is documented as explaining the central argument for this assessed contribution.

Correction and publication history

2026-10-18 · publication

Primary manuscript, attribution, and prior-work review for non-notifying local inclusion.

Read this published revision