Lower and upper bounds in the perturbation of general linear algebraic equations
A perturbation result concerning the upper and lower bounds on relative errors of solutions to linear algebraic equations is given under any norm for consistent systems and under the Euclidean norm for general systems. (C) 2000 Elsevier Science Ltd. All rights reserved.
APPLIED MATHEMATICS LETTERS
(2001). Lower and upper bounds in the perturbation of general linear algebraic equations. APPLIED MATHEMATICS LETTERS, 14(1), 49-52.
Available at: http://aquila.usm.edu/fac_pubs/4018