The Leading Constant for Large-Order Davenport-Schinzel Sequences
Wellman and Pettie noted that the true leading constant for large-order Davenport-Schinzel sequences was known only to lie in an interval. The paper improves the Roselle-Stanton lower bound to match the pigeonhole upper bound in the leading term, resolving the constant to exactly 1/2.
Exact FrontierDelta
Scope and record
Occurred: Feb 17, 2026
Delta type: SOURCE CLAIM
Assumptions: VibeMathed verification: unreviewed. Publication: preprint. AI contribution: ai-assisted. Imported under CC BY 4.0.
Canonical aliases: The Leading Constant for Large-Order Davenport-Schinzel Sequences · Davenport-Schinzel constant
Confidence: Not scored
Registry verification: unreviewed · preprint · resolved
Attribution
VibeMathed
registry · event recorded by
Jesse Geneson
human · human collaborator
Claude 4.6
model · ai model contributor · Anthropic
GPT 5.2
model · ai model contributor · OpenAI
Lineage and corrections
This event attributed to Jesse Geneson
This event attributed to GPT 5.2
This event attributed to Claude 4.6