On the lowest eigenvalue of a pseudo-differential operator

DOI10.1073/PNAS.76.12.6055zbMath0434.35071OpenAlexW2040966919WikidataQ33984755 ScholiaQ33984755MaRDI QIDQ3872880

Duong H. Phong, Charles L. Fefferman

Publication date: 1979

Published in: Proceedings of the National Academy of Sciences (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1073/pnas.76.12.6055

zbMATH Keywords

uncertainty principlepseudo-differential operatorsubelliptic estimatescommutators of vector fieldsorder of magnitude of the lowest eigenvaluesharp Garding inequalities

Mathematics Subject Classification ID

Pseudodifferential operators as generalizations of partial differential operators (35S05) Estimates of eigenvalues in context of PDEs (35P15) A priori estimates in context of PDEs (35B45) Pseudodifferential operators and other generalizations of partial differential operators (35S99)

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