Certificate-backed verification for known Schur and van der Waerden values, with explicit trusted bases.

Implementation for fast DIMACS Parsing on x86 using SSE SIMD instructions and experimental AVX512

Lean 4 verification portfolio: certified combinatorics, LRAT checking, toy robustness, and claim-boundary discipline.

Certified, composable map of impossibility claims with machine-checkable certificates and explicit trust rungs.

SAT + verified LRAT certificate for a covering-system lower bound (Erdős #273), plus a segmented sieve extending verified ranges for #385 and #647 to 1.0011e12