Tangential limits for harmonic functions with respect to $\varphi (\Delta )$ : stable and beyond

Jaehoon Kang, Panki Kim

In this paper, we discuss tangential limits for regular harmonic functions with respect to $\varphi (\Delta ):=-\varphi (-\Delta )$ in the $C^{1,1}$ open set $D$ in ${\mathbb{R}}^d$, where $\varphi$ is the complete…