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characterization of aluthge transform of composition operators
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نویسنده
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sohrabi morteza
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منبع
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mathematical analysis and convex optimization - 2021 - دوره : 2 - شماره : 1 - صفحه:29 -38
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چکیده
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Let simc φ be the aluthge transform of composition operator on l^2 (σ). the main result of this paper is characterizations of aluthge transform of composition operators in some operator classes that are weaker than hyponormal, such as hyponormal, quasihyponormal, paranormal, ∗-paranormal on l^2 (σ). moreover, to explain the results, we provide several useful related examples to show that simc φ lie between these classes.
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کلیدواژه
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aluthge transform ,polar decomposition ,conditional expectation ,hyponormal ,paranormal
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آدرس
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lorestan university, department of mathematics, iran
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پست الکترونیکی
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sohrabi.mo@lu.ac.ir
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Authors
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