Riemannian geodesics of semi Riemannian warped metrics

Oriella M. Amici, Biagio C. Casciaro

Let $(M_1,g_1)$ and $(M_2,g_2)$ be two $C^{\infty }$--differentiable connected, complete Riemannian manifolds, $k:M_1\to \mathbb{R}$ a $C^{\infty }$--differentiable function, having $0<k_0…