New strategies for determining backward perturbation bound of approximate two-sided Krylov subspaces

Wang, YJ; Wu, G

Wu, G (corresponding author), China Univ Min & Technol, Sch Math, Xuzhou 221116, Jiangsu, Peoples R China.

NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS, 2020; 27 (6):

Abstract

Given a nonsymmetric matrix A is an element of R-nxn and two unit norm vectors, the two-sided Krylov subspace methods construct a pair of bases for tw......

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