Numerical range preserving operators on a Banach algebra
نویسندگان
چکیده
منابع مشابه
On the decomposable numerical range of operators
Let $V$ be an $n$-dimensional complex inner product space. Suppose $H$ is a subgroup of the symmetric group of degree $m$, and $chi :Hrightarrow mathbb{C} $ is an irreducible character (not necessarily linear). Denote by $V_{chi}(H)$ the symmetry class of tensors associated with $H$ and $chi$. Let $K(T)in (V_{chi}(H))$ be the operator induced by $Tin text{End}(V)$. Th...
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ژورنال
عنوان ژورنال: Studia Mathematica
سال: 1975
ISSN: 0039-3223,1730-6337
DOI: 10.4064/sm-54-2-143-147