Counting Partial Hadamard Matrices in the Cubic Regime
A precise asymptotic formula for the number of $n \times 4t$ partial Hadamard matrices in the regimes $t/n^3 \to \infty$ and $t/n^3 \to \Theta$, reaching the cubic regime that previous approaches (de Launey-Levin and successors) could not.
Exact FrontierDelta
Scope and record
Occurred: Mar 31, 2026
Delta type: SOURCE CLAIM
Assumptions: VibeMathed verification: unreviewed. Publication: preprint. AI contribution: ai-co-developed. Imported under CC BY 4.0.
Canonical aliases: Counting Partial Hadamard Matrices in the Cubic Regime · Partial Hadamard, cubic regime
Confidence: Not scored
Registry verification: unreviewed · preprint · resolved
Attribution
VibeMathed
registry · event recorded by
Damek Davis
human · human collaborator
GPT 5.4 Pro
model · ai model contributor · OpenAI
Lineage and corrections
This event attributed to Damek Davis
This event attributed to GPT 5.4 Pro