Seymour's Second Neighborhood Conjecture
minimum out-degree 7; the conjecture is open in general
Exact FrontierDelta
Scope and record
Occurred: Jun 29, 2026
Delta type: SOURCE CLAIM
Assumptions: VibeMathed verification: unreviewed. Publication: preprint. AI contribution: ai-assisted. Editorial metadata: CC BY 4.0; linked content retains its own rights.
Canonical aliases: Seymour's Second Neighborhood Conjecture · Second neighborhood
Confidence: Not scored
Registry verification: unreviewed · preprint · partial
Attribution
VibeMathed
registry · event recorded by
Arpan Sadhukhan
human · human collaborator
R. B. Sandeep
human · human collaborator
Sagnik Sen
human · human collaborator
ChatGPT 5.5 Pro
model · ai model contributor · OpenAI
Lineage and corrections
This event attributed to Arpan Sadhukhan
This event attributed to Sagnik Sen
This event attributed to R. B. Sandeep
This event attributed to ChatGPT 5.5 Pro
Seymour's Second Neighborhood Conjecture evidence for this event
VibeMathed record: Seymour's Second Neighborhood Conjecture evidence for this event
Seymour's Second Neighborhood Conjecture parent of this event
minimum out-degree 7; the conjecture is open in general parent of this event
Act on this frontier