L2--oundedness of Hilbert transforms along variable curves

沿变曲线Hilbert变换的L2有界性，陈杰诚，朱相荣，设$\phi \in C^1(R^1)$, $\gamma \in C^2(R^1)$为奇或偶函数且在$(0,\infty )$为凸函数, $\gamma (0)=\gamma ^{\prime }(0)=0$, 定义沿曲线的Hilbert如下 $$H_{\phi ,\gam