OpenAI reports the lex-plus-powers Betti theorem in characteristic zero

Over every characteristic-zero field, for a homogeneous ideal containing a regular sequence of any positive length with degrees at least two, a corresponding lex-plus-powers ideal has the same Hilbert function and at least as large a graded Betti number in every homological and internal degree.

Sources for this record

What was already known

Earlier Eisenbud–Green–Harris Hilbert-function results and lex-plus-powers Betti bounds required split forms or degree-growth assumptions; the manuscript removes those restrictions in characteristic zero.

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 Eisenbud–Green–Harris and lex-plus-powers conjectures in the stated characteristic-zero setting.

Limitations

The selected claim is characteristic zero and requires a homogeneous regular sequence with all degrees at least two. No completed proof check was documented in the available sources.

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; technical check remains undocumented.

Read this published revision