Multivariate Subresultants in Roots
Algebraic Geometry
2007-05-23 v3 Commutative Algebra
Abstract
We give rational expressions for the subresultants of n+1 generic polynomials f_1,..., f_{n+1} in n variables as a function of the coordinates of the common roots of f_1,..., f_n and their evaluation in f_{n+1}. We present a simple technique to prove our results, giving new proofs and generalizing the classical Poisson product formula for the projective resultant, as well as the expressions of Hong for univariate subresultants in roots.
Cite
@article{arxiv.math/0501281,
title = {Multivariate Subresultants in Roots},
author = {Carlos D'Andrea and Teresa Krick and Agnes Szanto},
journal= {arXiv preprint arXiv:math/0501281},
year = {2007}
}
Comments
22 pages, no figures, elsart style, revised version of the paper presented in MEGA 2005, accepted for publication in Journal of Algebra