Pseudo-differential operators with isotropic symbols, Wick and anti-Wick operators, and hypoellipticity
نویسندگان
چکیده
We study the link between Ψdos and Wick operators via Bargmann transform. deduce a formula for symbol of operator in terms short-time Fourier transform Weyl symbol. This gives characterizations symbols Shubin type infinite order, results on composition. prove series expansion anti-Wick which leads to sharp Gårding inequality transition hypoellipticity symbols. Finally we show continuity operators, estimates operators. Nous étudions le lien entre et opérateurs passant par la transformée de Bargmann. déduisons une formule pour symbole l'opérateur en termes à court terme du Weyl. Ceci donne des caractérisations symboles d'ordre infini, résultats sur prouvons un développemet série dans anti–Wick qui conduit forte inégalité hypoellipticité les Shubin. Enfin, nous montrons continuité estimations anti–Wick.
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ژورنال
عنوان ژورنال: Journal de Mathématiques Pures et Appliquées
سال: 2022
ISSN: ['0021-7824', '1776-3371']
DOI: https://doi.org/10.1016/j.matpur.2022.09.002