The eigenvalues of hypoelliptic operators. III: The non-semibounded case

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Publication:1140796

DOI10.1007/BF02791064zbMath0436.35065MaRDI QIDQ1140796

A. Menikoff, Johannes Sjöstrand

Publication date: 1979

Published in: Journal d'Analyse Mathématique (Search for Journal in Brave)




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