Separators of fat points in P^n x P^m
arXiv:0906.1391
Abstract
We introduce definitions for the separator of a fat point and the degree of a fat point for a fat point scheme Z in P^n x P^m, and we study some of their properties.
13 pages; this version is a complete rewrite of our original article; the paper now focuses primarily on the bi-graded case; the title has also been changed to reflect the new focus