Singular perturbations of selfadjoint operators
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Publication:5554652
DOI10.1002/cpa.3160220305zbMath0167.42804OpenAlexW2108013572MaRDI QIDQ5554652
Publication date: 1969
Published in: Communications on Pure and Applied Mathematics (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1002/cpa.3160220305
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