5 citations · 6 across the 3 of their papers we have counts for
4 papers
Subelliptic Estimates for Quadratic Differential Operators
Karel Pravda-Starov
We prove global subelliptic estimates for quadratic differential operators. Quadratic differential operators are operators defined in the Weyl quantization by complex-valued quadra…
Spectra and semigroup smoothing for non-elliptic quadratic operators
Michael Hitrik, Karel Pravda-Starov
We study non-elliptic quadratic differential operators. Quadratic differential operators are non-selfadjoint operators defined in the Weyl quantization by complex-valued quadratic…
Contraction semigroups of elliptic quadratic differential operators
Karel Pravda-Starov
We study the contraction semigroups of elliptic quadratic differential operators. Elliptic quadratic differential operators are the non-selfadjoint operators defined in the Weyl qu…
On the pseudospectrum of elliptic quadratic differential operators
Karel Pravda-Starov
We study the pseudospectrum of a class of non-selfadjoint differential operators. Our work consists in a detailed study of the microlocal properties, which rule the spectral stabil…