TY - JOUR T1 - Linearised Estimate of the Backward Error for Equality Constrained Indefinite Least Squares Problems JO - East Asian Journal on Applied Mathematics VL - 2 SP - 270 EP - 279 PY - 2019 DA - 2019/03 SN - 9 DO - http://doi.org/10.4208/eajam.130518.170918 UR - https://global-sci.org/intro/article_detail/eajam/13082.html KW - Indefinite least squares, equality constrained indefinite least squares problem, normwise backward error, linearisation estimate. AB -

We study normwise backward error estimates for the equality constrained indefinite least squares problem and introduce an explicit sub-optimal linearisation estimate. Numerical examples show the reliability and efficiency of the estimate presented.