Global analytic hypoellipticity for a class of evolution operators on ${\mathbb{T}}^1\times {\mathbb{S}}^3$

Alexandre Kirilov, Ricardo Paleari da Silva, Wagner Augusto Almeida de Moraes

In this paper, we present necessary and sufficient conditions to have global analytic hypoellipticity for a class of first-order operators defined on $\mathbb{T}^1 \times \mathbb{S…