ON THE DISCRETENESS OF THE SPECTRUM IN AN EIGENVALUE PROBLEM
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Publication:5340319
DOI10.1093/qmath/16.1.46zbMath0131.32205OpenAlexW1981568593MaRDI QIDQ5340319
Publication date: 1965
Published in: The Quarterly Journal of Mathematics (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1093/qmath/16.1.46
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