Die Anwendung der Polarität auf die direkten Produktzerlegungen einer Gruppe
František Šik (1955)
Czechoslovak Mathematical Journal
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František Šik (1955)
Czechoslovak Mathematical Journal
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Josef Metelka (1966)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica-Physica-Chemica
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S. Mazur (1930)
Studia Mathematica
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S. Mazur (1930)
Studia Mathematica
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M. Kirszbraun (1934)
Fundamenta Mathematicae
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Jürgen Appell (1999)
Mathematica Bohemica
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We define a spectrum for Lipschitz continuous nonlinear operators in Banach spaces by means of a certain kind of "pseudo-adjoint" and study some of its properties.