34 citations · 118 across the 30 of their papers we have counts for
3 papers · 2 filters
From semigroups to subelliptic estimates for quadratic operators
Michael Hitrik, Karel Pravda-Starov, Joe Viola
Using an approach based on the techniques of FBI transforms, we give a new simple proof of the global subelliptic estimates for non-selfadjoint non-elliptic quadratic differential…
Short-time asymptotics of the regularizing effect for semigroups generated by quadratic operators
Michael Hitrik, Karel Pravda-Starov, Joe Viola
We study accretive quadratic operators with zero singular spaces. These degenerate non-selfadjoint differential operators are known to be hypoelliptic and to generate contraction s…
Two minicourses on analytic microlocal analysis
Michael Hitrik, Johannes Sjoestrand
These notes correspond roughly to the two minicourses prepared by the authors for the workshop on Analytic Microlocal Analysis, held at Northwestern University in May 2013. The fir…