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On the lowest eigenvalue of a pseudo-differential operator

Positive lower bounds for pseudo-differential operators with nonnegative symbols are derived; the bounds in particular yield subelliptic estimates for operators arising as sums of squares of vector fields.

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Autors principals: Fefferman, C., Phong, D. H.
Format: Artigo
Idioma:Inglês
Publicat: 1979
Matèries:
Accés en línia:https://ncbi.nlm.nih.gov/pmc/articles/PMC411799/
https://ncbi.nlm.nih.gov/pubmed/16592730
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