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arXiv · 1803.10186

Representations and properties of the W-weighted core-EP inverse

Yuefeng Gao·Jianlong Chen·Pedro Patricio
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Abstract

In this paper, we investigate the weighted core-EP inverse introduced by Ferreyra, Levis and Thome. Several computational representations of the weighted core-EP inverse are obtained in terms of singular-value decomposition, full-rank decomposition and QR decomposition. These representations are expressed in terms of various matrix powers as well as matrix product involving the core-EP inverse, Moore-Penrose inverse and usual matrix inverse. Finally, those representations involving only Moore-Penrose inverse are compared and analyzed via computational complexity and numerical examples.

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Yuefeng Gao, Jianlong Chen, Pedro Patricio. 2018-03-27. Representations and properties of the W-weighted core-EP inverse. https://arxiv.org/abs/1803.10186

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