Image-kernel (P,strongQstrong)-inverses in rings.pdfVIP

Image-kernel (P,strongQstrong)-inverses in rings.pdf

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Electronic Journal of Linear Algebra Volume 27 Article 17 2014 Image-kernel (P,Q)-inverses in rings Dijana Mosic Dragan S. Djordjev ic dragan@pmf.ni.ac.rs Gabriel Kantun-Montiel Follow this and additional works at : /ela Recommended Citation Mosic, Dijana; Djordjevic, Dragan S.; and Kantun-Montiel, Gabriel. (2014), Image-kernel ( ,Q)-inverses in rings, Electronic Journal of Linear Alge bra, Volume 27. DOI: http://dx ./10.13001/1081-3810.1618 This Article is brought to you for free and open access by Wyoming Scholars Repository. It has been accepted for inclusion in Electronic Journal of Linear Algebra by an authorized administrator of Wyoming Scholars Repository. For more information, please contact scholcom@. Electronic Journal of Linear Algebra ISSN 1081-3810 A publication of the International Linear Algebra Society Volume 27, pp. 272-283, March 2014 ELA http://math.technion.ac.il/iic/ela IMAGE-KERNEL (P, Q)-INVERSES IN RINGS∗ ´† ´† ´ ‡ DIJANA MOSIC , DRAGAN S. DJORDJEVIC , AND GABRIEL KANTUN-MONTIEL Abstract. Elements with equal idempotents related to their image-kernel (p,q)-inverses are characterized, and applications to perturbations, reverse order law and commutativity are given. Key words. Outer inverse, Idempotents, Ring. AMS subject classifications. 16B99, 15A09, 46L05. 1. Introduction. Let R be an associative ring with unit 1. We use R• to denote the set of all idempotents of R. For a ∈ R, we define the following kernel ideals a◦ = {x ∈ R : ax

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