Geodesic
Backward Aluthge iterates of a hyponormal operator and scalar extensions
C. Benhida 1   ; E. H. Zerouali 2
1 UFR de Mathématiques UMR-CNRS 8524 Université de Lille 1 bât. M2 59655 Villeneuve d'Ascq, France
2 Faculté des Sciences de Rabat BP 1014, Rabat, Maroc
Studia Mathematica, Tome 195 (2009) no. 1, pp. 1-10 Cet article a éte moissonné depuis la source Institute of Mathematics Polish Academy of Sciences

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Let $R$ and $S$ be two operators on a Hilbert space. We discuss the link between the subscalarity of $RS$ and $SR$. As an application, we show that backward Aluthge iterates of hyponormal operators and $p$-quasihyponormal operators are subscalar.
DOI : 10.4064/sm195-1-1
Keywords: operators hilbert space discuss link between subscalarity application backward aluthge iterates hyponormal operators p quasihyponormal operators subscalar

C. Benhida  1   ; E. H. Zerouali  2

1 UFR de Mathématiques UMR-CNRS 8524 Université de Lille 1 bât. M2 59655 Villeneuve d'Ascq, France
2 Faculté des Sciences de Rabat BP 1014, Rabat, Maroc 
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 and scalar extensions
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C. Benhida; E. H. Zerouali. Backward Aluthge iterates of a hyponormal operator
 and scalar extensions. Studia Mathematica, Tome 195 (2009) no. 1, pp. 1-10. doi: 10.4064/sm195-1-1

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