论文标题
在Toeplitz运营商的内核上
On kernels of Toeplitz operators
论文作者
论文摘要
我们运用de Branges-Rovnyak空间的理论来描述经典Hardy Space $ h^2 $的某些Toeplitz操作员的内核。特别是,我们讨论了操作员的内核$ t _ {\ bar f/ f} $和$ t _ {\ bar i \ bar f/ f} $,其中$ f $是$ h^2 $中的外部功能,$ i $是内在的,因此$ i(0)= 0 $。我们还获得了非Xtreme函数产生的De Branges-Rovnyak空间的结果。
We apply the theory of de Branges-Rovnyak spaces to describe kernels of some Toeplitz operators on the classical Hardy space $H^2$. In particular, we discuss the kernels of the operators $T_{\bar f/ f}$ and $T_{\bar I\bar f/ f}$, where $f$ is an outer function in $H^2$ and $I$ is inner such that $I(0)=0$. We also obtain results on de Branges-Rovnyak spaces generated by nonextreme functions.