Local solvability for positive combinations of generalized sub-Laplacians on the Heisenberg group
Local solvability for positive combinations of generalized sub-Laplacians on the Heisenberg group
As one step in a program to understand local solvability of complex coefficient second order differential operators on the Heisenberg group in a complete way, solvability of operators of the form $\Delta _{S,\alpha }=\Delta _S +i\alpha U$, where the leading term $\Delta _S$ is a âpositive combination of generalized and …