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Products of Unbounded Normal Operators
Product of operators Normal hyponormal subnormal operators
2012/2/29
The present paper partly constitutes an "unbounded" follow-up of a paper by I. Kaplansky dealing with bounded products of normal operators. Results on the normality of unbounded products are also incl...
More on the Normality of the Unbounded Product of Two Normal Operators
Unbounded operators. Selfadjoint and normal operators. Operator products
2012/2/29
Let $A$ and $B$ be two -non necessarily bounded- normal operators. We give conditions making their product normal. This is a continuation of recently obtained results on this subject.
Individual ergotic theorem for non-contractive normal operators
Strong law of large numbera individual ergodic theorem normal operator spectral measure
2009/9/21
A condition implying the strong Iaw of large numbers
for trajectories of a normal non-contractive operator is given. The
condition has been described in terms of a spectral measure, in the
spirit o...