A characterization of the eigenvalues of a completely continuous selfadjoint operator
Joachim Naumann (1972)
Commentationes Mathematicae Universitatis Carolinae
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Joachim Naumann (1972)
Commentationes Mathematicae Universitatis Carolinae
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Bohumil Cenkl (1972)
Commentationes Mathematicae Universitatis Carolinae
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Petr Simon (1971)
Commentationes Mathematicae Universitatis Carolinae
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