مشخصات پژوهش

صفحه نخست /Ternary derivations of nest ...
عنوان Ternary derivations of nest algebras
نوع پژوهش مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها Nest algebra, ternary (inner) derivation.
چکیده ‎Suppose that $ \mathcal{X} $ is a (real or complex) Banach space‎, ‎$dim \mathcal{X} \geq 2$‎, ‎and $\mathcal{N}$ is a nest on $\mathcal{X}$‎, ‎with each $N \in \mathcal{N}$ is complemented in $\mathcal{X}$ whenever $N_{-}=N$‎. ‎A ternary derivation of $\al$ is a triple of linear maps $(\gamma‎, ‎\delta‎, ‎\tau)$ of $\al$ such that $\gamma(AB)=\delta(A)B+A\tau(B)$ for all $A,B\in \al$‎. ‎We show that for linear maps $\delta‎, ‎\tau$ on $\al$ there exists a unique linear map $\gamma:\al \rightarrow \al$ defined by $\gamma(A)=RA+AT$ for some $R,T \in \al$ such that $(\gamma‎, ‎\delta‎, ‎\tau)$ is a ternary derivation of $\al$ if and only if $\delta‎ , ‎\tau$ satisfy $\delta(A)B+A\tau(B)=0$ for any $A,B\in \al$ with $AB=0$‎. ‎We also prove that every ternary derivation on $\al$ is an inner ternary derivation‎. ‎Our results are applied to characterize the (right or left) centralizers and derivations through zero products‎, ‎local right (left) centralizers‎, ‎right (left) ideal preserving maps and local derivations on nest algebras‎.
پژوهشگران هوگر قهرمانی (نفر دوم)، آجا فوسنر (نفر اول)