2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65750We give a geometric interpretation of Hamilton's matrix Harnack inequality for the Ricci flow as the curvature of a connection on space-time.15 pages, no figuresDifferential Geometry58G11 (primary); 53C21, 35K55 (secondary)A geometric interpretation of Hamilton's Harnack inequality for the Ricci flowtext