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On commutative non-self-adjoint operator algebras
Published online by Cambridge University Press: 18 May 2009
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A proof is given here of a theorem of Sarason [9, Theorem 2], the proof being valid in an arbitrary (non-separable) complex Hilbert space. Sarason's proof uses a theorem and lemma of Wermer which may both fail when the separability hypothesis is omitted [3]. By using a special case of Sarason's theorem and another result of Sarason [10, Lemma 1] a simplified and shortened proof is given of a result of Scroggs [11, Corollary 1].
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- Copyright © Glasgow Mathematical Journal Trust 1974
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