Subresultants in Multiple Roots
arXiv:1012.4615
Abstract
We extend our previous work on Poisson-like formulas for subresultants in roots to the case of polynomials with multiple roots in both the univariate and multivariate case, and also explore some closed formulas in roots for univariate polynomials in this multiple roots setting.
21 pages, latex file. Revised version accepted for publication in Linear Algebra and its Applications