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The strongly irreducible operators in nest algebras
An operatorT on \(\mathcal{H}\) is called strongly irreducible ifT does not commute with any nontrivial idempotent o...
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The spectral picture and the closure of the similarity orbit of strongly irreducible operators
An operator on a complex, separable, infinite dimensional Hilbert space is strongly irreducible if it does not commute with any nontrivial idempotent. This article answers the following questions of D. A. Herr...