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Diyala Journal For Pure Science

Scientific Refereed Journal Published By College of Science - University of Diyala


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Diyala Journal For Pure Sciences DJPS

ISRA Impact Factor:3.715

P- ISSN:2222-8373, E-ISSN:2518-9255

Volume 13, Issue 1, Part 1 , January. 2017



On The Product Of Positively Defined Operators


Mahmood Kamil Shihab


Year: 2017, Volume: 13, Issue: 1, Part:1


Pages: 74-77, DOI: http://dx.doi.org/10.24237/djps.1301.35A


Language: English


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 The main result is to prove that the product of two positively defined operators is positively defined if and only if it is normal. In general, the normality is required can not be dropped.


Keywords: Positively defined operators, Normal Operators, self-adjoint operators, Hilbert space.

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