Superseded result · C-0113
The global classical zeta zero-free denominator improves to 4.824
For every real t>=2, zeta(sigma+it) is nonzero whenever sigma>1-1/(4.824 log t). This strictly improves C-0111's verifier-pinned denominator 4.83 and Andrew Yang's published same-range denominator 4.862.
The global classical zeta zero-free denominator improves to 4.81
The classical global zero-free region for the Riemann zeta-function is widened to denominator $4.81$ for every $t\ge2$. The proof combines a sharp exact vertical boundary, an everywhere-positive rational degree-$16$ detector, exact prime-phase certificates, a directed interval induction, and the published Platt--Trudgian finite-height theorem.