Estimates for generalized fractional integrals associated with operators on Morrey--Campanato spaces

Cong Chen, Hua Wang

Let $\mathcal{L}$ be the infinitesimal generator of an analytic semigroup $\{e^{-t\mathcal{L}}{\}}_{t>0}$ satisfying the Gaussian upper bounds. For given $0<\alpha <n$, let $\mathca…