2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/272We classify the log del Pezzo surface (S,B) of rank 1 with no 1-,2-,3-,4-, or 6-complements with the additional condition that B has one irreducible component C which is an elliptic curve, and that C has the coefficient b in B with (1/n)floor((n+1)b)=1 for n=1,2,3,4, and 6.LaTeX2e, 14 pages, with 24 postscript figuresAlgebraic Geometrytext