On the quasi-similarity of hyponormal contractions
نویسندگان
چکیده
منابع مشابه
On the Hyponormal Property of Operators
Let $T$ be a bounded linear operator on a Hilbert space $mathscr{H}$. We say that $T$ has the hyponormal property if there exists a function $f$, continuous on an appropriate set so that $f(|T|)geq f(|T^ast|)$. We investigate the properties of such operators considering certain classes of functions on which our definition is constructed. For such a function $f$ we introduce the $f$-Aluthge tran...
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ژورنال
عنوان ژورنال: Illinois Journal of Mathematics
سال: 1981
ISSN: 0019-2082
DOI: 10.1215/ijm/1256047164