(Semi-)global analytic hypoellipticity for a class of “sums of squares” which fail to be locally analytic hypoelliptic

Chinni, Gregorio

doi:10.1090/proc/14464

(Semi-)global analytic hypoellipticity for a class of “sums of squares” which fail to be locally analytic hypoelliptic
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Proc. Amer. Math. Soc. 150 (2022), 5193-5202 Request permission

Abstract:

The global and semi-global analytic hypoellipticity on the torus is proved for two classes of sums of squares operators, introduced by P. Albano, A. Bove, and M. Mughetti, satisfying the Hörmander condition and which fail to be either locally or microlocally analytic hypoelliptic.

References

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