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Subelliptic estimates for certain complexes of pseudodifferential operators

โœ Scribed by David Hecker; W.J. Sweeney

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
837 KB
Volume
61
Category
Article
ISSN
0022-0396

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๐Ÿ“œ SIMILAR VOLUMES

Subelliptic Estimates for a Class of Deg
Subelliptic Estimates for a Class of Degenerate Elliptic Integro-Differential Operators
โœ Claudy Cancelier; Bruno Franchi ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 884 KB

## Abstract In this paper we prove subelliptic estimates for operators of the form ฮ”__~x~ +__ ฮป^2^ (__x__)__S__ in โ„__^N^__ = โ„ ร— โ„, where the operator __S__ is an elliptic integro โ€ differential operator in โ„__^N^__ and ฮป is a nonnegative Lipschitz continuous function.

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โœ Alberto Parmeggiani ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 880 KB

In this work we shall study a definition of subunit ball for non-negative symbols of sub-elliptic pseudodifferential operators, extending in phase-space the one given by Stein, Nagel, and Wainger in the differential-operator case. Using microlocal methods introduced by Fefferman and Phong, we prove