2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/100934Let I(G) be the edge ideal associated to a simple graph G. We study the graded Betti numbers that appear in the linear strand of the minimal free resolution of I(G).11 pages; revised, final version; to appear in Communications in AlgebraCommutative AlgebraCombinatorics13D40; 13D02; 05C90text