A Hyponormal Operator Whose Spectrum is Not a Spectral Set
نویسندگان
چکیده
منابع مشابه
Groups whose set of vanishing elements is exactly a conjugacy class
Let $G$ be a finite group. We say that an element $g$ in $G$ is a vanishing element if there exists some irreducible character $chi$ of $G$ such that $chi(g)=0$. In this paper, we classify groups whose set of vanishing elements is exactly a conjugacy class.
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ژورنال
عنوان ژورنال: Proceedings of the American Mathematical Society
سال: 1973
ISSN: 0002-9939
DOI: 10.2307/2038775