2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/210711We report on studies of multi-parton corrections from nonlocal operator expansion. We discuss relations between eikonal-line matrix elements and parton distributions, and present an illustration for initial-state collinear evolution.Contribution to "HERA and the LHC" Workshop Proceedings, CERN, 2008High Energy Physics - Phenomenologytext