Isometries with Isomorphic Invariant Sub
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LΓ‘szlΓ³ KΓ©rchy
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Article
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2000
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Elsevier Science
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English
β 407 KB
terized those reductive normal operators which have isomorphic invariant subspace lattices. In a subsequent paper (J. Operator Theory 22 (1989), 31 49) they gave several necessary conditions of isomorphism in the class of nonreductive isometries. In this paper, we provide a new necessary condition w