2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/15676Geodesics deviation equation (GDE) is itroduced. In "adiabatic" approximation exact solution of the GDE if found. Perturbation theory in general case is formulated. Geometrical criterion of local instability which may lead to chaos is formulated.Chaotic Dynamicstext