A quasi-nilpotent operator with reflexive commutant, II
نویسندگان
چکیده
منابع مشابه
A Quasi-nilpotent Operator with Reflexive Commutant, Ii
A new example of a non-zero quasi-nilpotent operator T with reflexive commutant is presented. Norms ‖T n‖ converge to zero arbitrarily fast. Let H be a complex separable Hilbert space and let B(H) denote the algebra of all continuous linear operator on H. If T ∈ B(H) then {T}′ = {A ∈ B(H) : AT = TA} is called the commutant of T . By a subspace we always mean a closed linear subspace. If A ⊂ B(H...
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ژورنال
عنوان ژورنال: Studia Mathematica
سال: 1999
ISSN: 0039-3223,1730-6337
DOI: 10.4064/sm-132-2-173-177