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math.AP2017
Analytic and Gevrey Hypoellipticity for Perturbed Sums of Squares Operators
Antonio Bove, Gregorio Chinni
We prove a couple of results concerning pseudodifferential perturbations of differential operators being sums of squares of vector fields and satisfying Hörmander's condition. The…
math.AP2017
On the Gevrey regularity for Sums of Squares of vector fields, study of some models
Gregorio Chinni
The micro-local Gevrey regularity of a class of "sums of squares" with real analytic coefficients is studied in detail. Some partial regularity result is also given.