Global (and Local) Analyticity for Second Order Operators Constructed from Rigid Vector Fields on Products of Tori

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Tartakoff, David S.;
  • Subject: Mathematics - Complex Variables | 32

We prove global analytic hypoellipticity on a product of tori for partial differential operators which are constructed as rigid (variable coefficient) quadratic polynomials in real vector fields satisfying the H\"ormander condition and where $P$ satisfies a `maximal' es... View more
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