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Strongly rational unitary vertex operator algebras and conformal nets

OpenAI · September 25, 2026

Lean

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Abstract

Every simple unitary strongly rational vertex operator algebra generates a completely rational conformal net. All its simple grading-restricted modules are unitarizable, its canonical fusion forms are positive, and the Carpi–Weiner–Xu functor gives a braided unitary tensor equivalence from its grading-restricted finite-length module category onto the finite-index sectors of the net. Gui's extension theorems then identify normalized irreducible finite-index local extensions of these nets with simple CFT-type conformal extensions of the vertex operator algebras.

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work in progress

Collected automatically by AI tools (Claude Opus 5.5 and GPT-6 Astra, 2026-10-21) and not checked by a person. May be wrong or incomplete. Report an error.

Formalization

  • OpenAI math release, Lean scope notes for family 280 (release documentation, 2026-10-06). According to these notes, the Lean statement covers only clause (1) of Theorem 1.1 (polynomial energy bounds, CKLW strong locality, irreducible conformal net), excluding complete rationality, complete unitarity, the braided tensor equivalence and the extension correspondence.
  • OpenAI math release, VertexAlgebraNet.lean (comparator challenge) (github.com/openai/math, 2026). Comparator statement OAI.MinimalVertex.main for clause (1): for a simple, unitary, strongly rational CFT-type VOA, polynomial energy bounds, CKLW strong locality and an irreducible conformal net structure on the interval algebras; the proof is left as sorry in this challenge file.
  • OpenAI math release, MinimalComparator.lean (github.com/openai/math, commit adc7f12). Solution module that proves the comparator statement main by reduction to source_main_clause_one, imported from OAI.RepresentationTheory.VertexAlgebra.MainClauseOne.

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Cite

@misc{OAI:Strongly-rational-unitary-vertex-operator-algebras-and-conformal-nets-September-25-2026,
  author = {{OpenAI}},
  title = {{Strongly rational unitary vertex operator algebras and conformal nets}},
  howpublished = {OpenAI Math Release preprint
                  \href{https://github.com/openai/math/blob/main/preprints/Strongly-rational-unitary-vertex-operator-algebras-and-conformal-nets-September-25-2026/paper.pdf}{OAI:Strongly-rational-unitary-vertex-operator-algebras-and-conformal-nets-September-25-2026}},
  year = {2026}
}

Lean formalization

OpenAI provides Lean files for this family: lean/docs/280.md. The Lean statements have not been checked by people against the paper's claims.

Family 280: Unitary vertex operator algebras and conformal nets

Proves the strongly rational case of the strong-locality conjecture: every simple unitary strongly rational complex vertex operator algebra generates a completely rational conformal net. Its simple modules are unitarizable, and its representation category agrees with the net’s finite-index sectors as a braided unitary tensor category.

This is the only paper in this family.