Source authenticated

Matrix-Tree Obstruction for Half-Collinear Graviton Vertices

Answers the obstruction rather than the whole question: it says exactly when the Matrix-Tree Theorem can be applied and classifies the chambers, and gives a compact five-graviton formula outside the decay region. Simplifying the general solution, which is what the source paper left to future work, remains open.

Exact FrontierDelta

Prior state unknown→proved

Scope and record

Occurred: Aug 9, 2026

Delta type: SOURCE CLAIM

Assumptions: VibeMathed verification: lean-checked. Publication: announcement. AI contribution: ai-discovered. Editorial metadata: CC BY 4.0; linked content retains its own rights.

Canonical aliases: Matrix-Tree Obstruction for Half-Collinear Graviton Vertices · Graviton root cones

Confidence: Not scored

Registry verification: lean checked · announcement · partial

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Attribution

VibeMathed
registry · event recorded by

James Peebles
human · human collaborator

James Kehoe
human · human collaborator

OpenAI Codex (GPT-5 family)
model · ai model contributor · OpenAI

Artifacts and verifiers

Passing verification workflow

lean artifact · pending

Artifact ↗

Compute record

No linked compute attempts recorded.

Lineage and corrections

This event attributed to James Peebles

This event attributed to James Kehoe

This event attributed to OpenAI Codex (GPT-5 family)

Repository evidence for this event

Passing verification workflow evidence for this event

VibeMathed record: Matrix-Tree Obstruction for Half-Collinear Graviton Vertices evidence for this event

Matrix-Tree Obstruction for Half-Collinear Graviton Vertices parent of this event

Answers the obstruction rather than the whole question: it says exactly when the Matrix-Tree Theorem can be applied and classifies the chambers, and gives a compact five-graviton formula outside the decay region. Simplifying the general solution, which is what the source paper left to future work, remains open. parent of this event

Matrix-Tree Obstruction for Half-Collinear Graviton Vertices evidence for this event

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