Positive selfadjoint extensions of positive symmetric subspaces
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Publication:1238293
DOI10.1007/BF01214571zbMath0358.47015MaRDI QIDQ1238293
Earl A. Coddington, Hendrik S. V. de Snoo
Publication date: 1978
Published in: Mathematische Zeitschrift (Search for Journal in Brave)
Full work available at URL: https://eudml.org/doc/172656
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