Notes on Regularity of Fourier integral operators with symbol in $S_{0,\delta }^m$

Guangqing Wang, Suixin He

Let $T_{a,\phi }$ be a Fourier integral operator defined with $a\in S_{0,\delta }^m(0\le \delta <1)$ and $\phi \in {\Phi }^2$ satisfying the strong non-degenerate condition. We demonstrate that when the…