Document Type : Original Article
Department of Mathematics, Faculty of science University of Qom, Qom, Iran.
In this paper, we study conformally ﬂat 5-th root (α, β)-metrics. We prove that every
conformally ﬂat 5-th root (α, β)-metric with relatively isotropic mean Landsberg curvature
must be either Riemannian metrics or locally Minkowski metrics.