Published online by Cambridge University Press: 06 March 2018
Let $s\in \mathbb{R}$ and
$0<p\leqslant \infty$. The fractional Fock–Sobolev spaces
$F_{\mathscr{R}}^{s,p}$ are introduced through the fractional radial derivatives
$\mathscr{R}^{s/2}$. We describe explicitly the reproducing kernels for the fractional Fock–Sobolev spaces
$F_{\mathscr{R}}^{s,2}$ and then get the pointwise size estimate of the reproducing kernels. By using the estimate, we prove that the fractional Fock–Sobolev spaces
$F_{\mathscr{R}}^{s,p}$ are identified with the weighted Fock spaces
$F_{s}^{p}$ that do not involve derivatives. So, the study on the Fock–Sobolev spaces is reduced to that on the weighted Fock spaces.
The author was supported by NRF of Korea (NRF-2016R1D1A1B03933740).