A structured rank-revealing method for Sylvester matrix |
| |
Authors: | Bingyu Li Zhuojun Liu Lihong Zhi |
| |
Institution: | 1. School of Mathematics and Statistics, Northeast Normal University, Changchun 130024, China;2. Key Laboratory of Mathematics Mechanization, AMSS, Beijing 100080, China |
| |
Abstract: | We propose a fast algorithm for computing the numeric ranks of Sylvester matrices. Let S denote the Sylvester matrix and H denote the Hankel-like-Sylvester matrix. The algorithm is based on a fast Cholesky factorization of STS or HTH and relies on a stabilized version of the generalized Schur algorithm for matrices with displacement structure. All computations can be done in O(r(n+m)), where n+m and r denote the size and the numerical rank of the Sylvester matrix, respectively. |
| |
Keywords: | 68W30 65Y20 |
本文献已被 ScienceDirect 等数据库收录! |
|