Remarks on hypoelliptic equations
Analysis of PDEs
2026-04-06 v3
Abstract
Smooth hypoellipticity for scalar equations is quite well understood presently. On the other hand, much remains to be done for systems and/or at different levels of regularity and in particular for -hypoellipticity. In this article we provide some examples and counter-examples.
Cite
@article{arxiv.2302.01832,
title = {Remarks on hypoelliptic equations},
author = {Valeria Banica and Nicolas Burq},
journal= {arXiv preprint arXiv:2302.01832},
year = {2026}
}
Comments
Revised version, to appear in Ann. Henri Lebesgue