In this article, necessary and suffcient conditions for the cone nonnegativity of Moore-Penrose inverses of unbounded Gram operators are derived. These conditions include statements on acuteness of certain closed convex cones in infinite-dimensional real Hilbert spaces. © 2016 Tusi Mathematical Research Group.

Ramesh G

Department of Mathematics

T. Kurmayya

Fulltext

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Journal	Annals of Functional Analysis
Publisher	Duke University Press
ISSN	20088752