Author: Zemánek, Jaroslav
- : Continuite lipschitzienne du spectre comme fonction d'un opérateur normal. (French) [Lipschitz continuity of spectrum as function of a normal operator]. Commentationes Mathematicae Universitatis Carolinae, vol. 17 (1976), issue 3, pp. 507-512
- : Concerning spectral characterizations of the radical in Banach algebras. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 17 (1976), issue 4, pp. 689-691
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