... a Douglas space [ 14 ] if Randers metric Douglas space Berwald space Conformally invariant 53B40 53C60 A number of geometers have been studying Douglas space [ 1, 2 ] from different point of view. The theory of Finsler spaces more precisely Berwald spaces with an (α, β...

.... 22E25 53C30 53C60 Research into left-invariant Riemannian metrics on Lie groups is an active subject of research and this topic is mentioned among many author’s works so far. The curvature properties of such metrics on various kinds of Lie groups are mainly investigated in classical works...