2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/266We construct a canonical free resolution for arbitrary monomial modules and lattice ideals. This includes monomial ideals and defining ideals of toric varieties, and it generalizes our joint results with Irena Peeva for generic ideals.Plain TeX, with epsf.tex, 17 pages, 2 illustrations, author-supplied PostScript file available at http://www.math.columbia.edu/~bayer/papers/cellular.psAlgebraic Geometrytext