EN
We introduce the generalized fractional integrals $Ĩ_{α,d}$ and prove the strong and weak boundedness of $Ĩ_{α,d}$ on the central Morrey spaces $B^{p,λ}(ℝⁿ)$. In order to show the boundedness, the generalized λ-central mean oscillation spaces $Λ^{(d)}_{p,λ}(ℝⁿ)$ and the generalized weak λ-central mean oscillation spaces $WΛ^{(d)}_{p,λ}(ℝⁿ)$ play an important role.