# CSM_RH Paper 20 v0.1

Campaign 19 closes the single-zero-sensitivity bridge.

Main results:

- exact Mellin identity for E(x)=psi(x)-x;
- a dyadic L2 bound X^(3-kappa+o(1)) gives Mellin holomorphy in Re(s)>1-kappa/2;
- zeta'/zeta has a pole at each individual zeta zero, so even one off-axis zero in that half-plane is excluded;
- zero-packet cancellation and Gram coercivity are unnecessary for this bridge;
- MLEPG(alpha,delta) therefore has exact fixed-zero-strip authority through the residue-chain theorem plus Mellin pole recovery;
- S-RH-027 is closed as a bridge requirement;
- PESC and MLEPG remain open;
- future work is restricted to prime-side fixed-power lemma generation.

No proof or disproof of RH is claimed.
No live GLM provider run is claimed.