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Backward Aluthge iterates of a hyponormal operator and scalar extensions

100%

Benhida C., Zerouali E.

Studia Mathematica

2009

tom 195

nr 1

1-10

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.

Back to RS-SR spectral theory

100%

Benhida C., Zerouali E.

Banach Center Publications

2007

tom 75

nr 1

55-66

Let X, Y be Banach spaces, S: X → Y and R: Y → X be bounded operators. We investigate common spectral properties of RS and SR. We then apply the result obtained to extensions, Aluthge transforms and upper triangular operator matrices.

Ograniczanie wyników

1 Banach Center Publications

1 Studia Mathematica

2 Benhida C.

2 Zerouali E.

1 2009

1 2007

Wyniki wyszukiwania

Backward Aluthge iterates of a hyponormal operator and scalar extensions

Back to RS-SR spectral theory