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arXiv:1202.6142 [math.FA]AbstractReferencesReviewsResources

More on the Normality of the Unbounded Product of Two Normal Operators

Mohammed Hichem Mortad, Khaldia Madani

Published 2012-02-28, updated 2012-05-25Version 4

Let $A$ and $B$ be two -non necessarily bounded- normal operators. We give new conditions making their product normal. We also generalize a result by Deutsch et al on normal products of matrices.

Comments: This paper has been withdrawn for a critical technical reason
Categories: math.FA, math.OA
Subjects: 47A05, 47B25
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