On ۳-Dimensional Finsler Manifolds

Every Landsberg metric and every Landsbeg metric is a weakly Landsberg metric, but the converse is not true generally. Let (M, F) be a ۳-dimensional Finsler manifold. In this paper, we find a condition under which the notions of weakly Landsberg metric and Landsberg metric are equivalent.

کلیدواژه ها:

Moor frame ، weakly Landsberg metric ، Landsberg metric ، Berwald metric ، Randers metric