Chansangiam, Pattrawut

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Chansangiam, Pattrawut
Alternative Name
Chansangiam, P.
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Email
pattrawut.ch@kmitl.ac.th

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    Item type:Publication,
    Tracy-singh products and classes of operators
    (2019-07-01)
    Ploymukda, Arnon
    ;
    Chansangiam, Pattrawut
    ;
    Lewkeeratiyutkul, Wicharn
    We investigate relationship between Tracy-Singh products and certain classes of Hilbert space operators. We show that the normality, hyponormality, paranormality of operators are preserved by Tracy-Singh products. Operators of class-A type are also preserved under Tracy-Singh products. Moreover, we obtain necessary and sufficient conditions for the Tracy- Singh product of two operators to be normal, quasinormal, (co)isometry, and unitary.