Semiclassical hypoelliptic estimates with a loss of many derivatives

• Autores: Alberto Parmeggiani, Karel Pravda-Starov
• Localización: Revista matemática iberoamericana, ISSN 0213-2230, Vol. 30, Nº 4, 2014, págs. 1439-1478
• Idioma: inglés
• DOI: 10.4171/RMI/821
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• Resumen

  • We study the pseudospectral properties of general pseudodifferential operators around a doubly characteristic point and provide necessary and sufficient conditions for semiclassical hypoelliptic a priori estimates with a loss of many derivatives.