Arithmetic-Kakeya forcing certificate at S = 7/4
FrontierMath arithmetic-Kakeya · note dated Jun 14, 2026
An explicit, machine-checked certificate on the smallest grid (2×2) that reaches the FrontierMath warm-up threshold S = 7/4. The note also gives evidence that the current certificate format cannot go below about γ ≈ 1.6751.
- 7/4 is a known bound (Katz–Tao), not a new one.
- The arithmetic-Kakeya record of 1.67513… is untouched.
- Checked against a rebuilt verifier. It is not an official Epoch AI result.
- The "floor" claim is evidence, not a theorem.