Analytic hypoellipticity for sums of squares and the Treves conjecture
نویسندگان
چکیده
منابع مشابه
Analytic Hypoellipticity at Non-symplectic Poisson-treves Strata for Sums of Squares of Vector Fields
We consider an operator P which is a sum of squares of vector fields with analytic coefficients. The operator has a nonsymplectic characteristic manifold, but the rank of the symplectic form σ is not constant on CharP . Moreover the Hamilton foliation of the non symplectic stratum of the Poisson-Treves stratification for P consists of closed curves in a ring-shaped open set around the origin. W...
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ژورنال
عنوان ژورنال: Journal of Functional Analysis
سال: 2018
ISSN: 0022-1236
DOI: 10.1016/j.jfa.2018.03.009