On distributional point values and boundary values of analytic functions

Abstract

We give the following version of Fatou's theorem for distributions that are boundary values of analytic functions. We prove that if $f\in\mathcal{D}^{\prime}(a,b) $ is the distributional limit of the analytic function $F$ defined in a region of the form $(a,b) \times(0,R),$ if the one sided distributional limit exists, $f(x_{0}+0) =\gamma,$ and if $f$ is distributionally bounded at $x=x_{0}$, then the \L ojasiewicz point value exists, $f(x_{0})=\gamma$ distributionally, and in particular $F(z)\to \gamma$ as $z\to x_{0}$ in a non-tangential fashion.