Abstract:
Let KK be a field, S=K[x1,…,xn]S=K[x1,…,xn], the polynomial ring over KK, and let FF be a finitely generated graded free SS-module with homogeneous basis. Certain invariants, such as the Castelnuovo–Mumford regularity and the graded Betti numbers of submodules of FF, are studied; in particular, the componentwise linear submodules of FF are characterized in terms of their graded Betti numbers.