A note on stable perturbations of Moore-Penrose inverses

作者:Li, Zhao; Xu, Qingxiang; Wei, Yimin*
来源:Numerical Linear Algebra with Applications, 2013, 20(1): 18-26.
DOI:10.1002/nla.838

摘要

Perturbation bounds for MoorePenrose inverses of rectangular matrices play a significant role in the perturbation analysis for linear least squares problems. In this note, we derive a sharp upper bound for MoorePenrose inverses, which is better than a well known existing one.

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