
Stability of equilibrium solutions of Hamiltonian systems with n-degrees of freedom and single resonance in the critical case
Keywords: سیستم همیلتون; 37C75; 34D20; 34A25; Hamiltonian system; Equilibrium solution; Type of stability; Normal form; Resonances; Critical cases; Lyapunov's Theorem; Chetaev's Theorem; Cosmological problems;