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Bulletin of the American Mathematical Society

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On scarcity of operators with finite spectrum


Author: Bernard Aupetit
Journal: Bull. Amer. Math. Soc. 82 (1976), 485-486
MSC (1970): Primary 46H20, 46K99; Secondary 47A10
MathSciNet review: 0399857
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  • 3. Irving Kaplansky, Ring isomorphisms of Banach algebras, Canadian J. Math. 6 (1954), 374–381. MR 0062960
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  • 5. Edoardo Vesentini, On the subharmonicity of the spectral radius, Boll. Un. Mat. Ital. (4) 1 (1968), 427–429 (English, with Italian summary). MR 0244766
  • 6. Edoardo Vesentini, Maximum theorems for spectra, Essays on Topology and Related Topics (Mémoires dédiés à Georges de Rham), Springer, New York, 1970, pp. 111–117. MR 0271731

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DOI: https://doi.org/10.1090/S0002-9904-1976-14066-9