Answers are grounded in this paper and cite their sources.
We study strong unique continuation for products of elliptic operators. The main tools are Carleman inequalities for second order elliptic operators. We obtain strong unique continuation assuming either Gevrey regularity of the coefficients or some pointwise conditions on the coefficients.
No takes yet. Share an insight, caveat, or question.
Colombini et al. (2009) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: