COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES, cilt.71, sa.5, ss.587-596, 2018 (SCI-Expanded)
Let TM be the tangent bundle of an n-dimensional Riemannian manifold (M, g) endowed with a Riemannian metric (G) over tilde which is linear combinations of the three classical lifts of the base metric with constant coefficients. In this paper, we give a characterization of fibre-preserving projective vector fields on (TM, (G) over tilde) and present some results concerning them.