A reordered Schur factorization method for zero-dimensional polynomial systems with multiple roots
Robert M. Corless, Patrizia M. Gianni, Barry Trager · 1997
\Ve discuss the use of a single generic linear combination of multiplication matrices, and its reordered Schur factorization, to find the roots of a system of multivariate polynomial equations.The principal contribution of this paper is to show how to reduce thr multivariate problem to a univariate problem, even in the raw of multiple roots, in a numerically stable wav,