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open-problems

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Integer multiplication below n log n: a conditional witness kappa = 6685733/10^10 (> 2^-11) for T(n) = O(n (log n)^(1-kappa)) in the multitape model, building on OpenAI's problem and Colkitt's integer-mult-bounds: certificates, independent replays, Lean 4 checks

  • Updated Oct 11, 2026
  • Python
SAIR-FOUNDATION-FOR-SCIENCE-AND-AI-RESEARCH

A single index to every SAIR Foundation challenge entered: the open problem each one states, the repository holding the method and the code, and what that method actually reached. Open science competitions in mathematics and computation, run by the Foundation for Science and AI Research.

  • Updated Sep 9, 2026

The minimal elements of the prime numbers which are > b written in the positional numeral system with radix b, as digit strings under the subsequence ordering, for 2 ≤ b ≤ 36

  • Updated Oct 15, 2026
  • C++

A source-linked index of open math problems solved, refuted, or settled with AI — tracking the July 2026 wave. Verification-status badges, Lean/DRAT certificates, priority caveats.

  • Updated Jul 23, 2026

Deterministic 3SUM in O(n^1.995782) and APSP / (min,+) / all-edges Exact Triangle in O(n^2.995943), improving Alman–Vassilevska Williams: proofs, certificates, Lean 4 checks, and a list of closed ideas to avoid duplicate work

  • Updated Oct 11, 2026
  • Lean

GF(2) Möbius / zeta transform in o(N log N) XOR gates, the first asymptotic improvement over Yates (1937) for circuits with cancellation: proofs, certificates, Lean 4 checks, and closed ideas. Asymptotic only, AI-checked, not yet human-refereed.

  • Updated Oct 11, 2026
  • C

Deterministic Subset Sum faster than meet-in-the-middle: 2^{0.4986298 n}, derandomising Ye–Li and OpenAI's 2^{0.49n} construction. Proofs, interval certificates, Lean 4 checks, and closed ideas. Preprint, not peer reviewed.

  • Updated Oct 11, 2026
  • Lean

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