Campanato–Morrey spaces and variable Riesz potentials

The aim in this note is to show that the variable Riesz potential operator \(I_{\alpha(\cdot)}\) $I_{\alpha (·)}$ embeds variable exponent grand Morrey spaces \(L^{p(\cdot)-0,\nu(\cdot),\theta}(G)\) $L^{p(·)-0,\nu (·),\theta }(G)$ into Campanato–Morrey spaces.