Least Squares Properties of Generalized Inverses

Least Squares Properties of Generalized Inverses

Year:    2021

Author:    Predrag S. Stanimirović, Mosić Dijana, Yimin Wei

Communications in Mathematical Research , Vol. 37 (2021), Iss. 4 : pp. 421–447

Abstract

The aim of this paper is to systematize solutions of some systems of linear equations in terms of generalized inverses. As a significant application of the Moore-Penrose inverse, the best approximation solution to linear matrix equations (i.e. both least squares and the minimal norm) is considered. Also, characterizations of least squares solution and solution of minimum norm are given. Basic properties of the Drazin-inverse solution and the outer-inverse solution are present. Motivated by recent research, important least square properties of composite outer inverses are collected.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cmr.2021-0011

Communications in Mathematical Research , Vol. 37 (2021), Iss. 4 : pp. 421–447

Published online:    2021-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    27

Keywords:    Outer inverse Moore-Penrose inverse DMP inverse core-EP inverse.

Author Details

Predrag S. Stanimirović

Mosić Dijana

Yimin Wei