Quantitative unique continuation property for fourth-order Baouendi-Grushin type subelliptic operators with a potential

Yusheng Qiu, Jinggang Tan, Aliang Xia

We investigate the quantitative unique continuation property for solutions to $$\hat{I}{”}_X^{2}u=Vu,$$ where $\hat{I}{”}_X=\hat{I}{”}_x+|x{|}^{2{\hat{I}}^2}\hat{I}{”}_y$ ($0<{\hat{I}}^2\le 1$), with $x \in \mathbb…