Critical Gevrey index for hypoellipticity of parabolic operators and Newton polygones
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説明
In this paper we give geometrical expressions of the (non) hypoellipticity in Gevrey spaces of parabolic operators via Newton polygones. We also determine the critical Gevrey class for which the hypoellipticity holds.
収録刊行物
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- Annali di Matematica Pura ed Applicata
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Annali di Matematica Pura ed Applicata 170 103-131, 1996-12-01
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