### Analytic Hypoellipticity and the Treves Conjecture

#### Abstract

*P*, (firstly appeared and studied in [3]) having a single symplectic stratum and prove that it is not analytic hypoelliptic. This yields a counterexample to the sufficient part of Treves conjecture; the necessary part is still an open problem.

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DOI: 10.6092/issn.2240-2829/6690

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