At St Petersburg University he was taught by Chebyshev who, as we shall see below, had a strong influence on him. Lyapunov graduated in 1880 and remained at St Petersburg to undertake research.
Sa St Petersburg University siya ay tinuturuan sa pamamagitan ng Chebyshev na, habang kami ay makikita sa ibaba, nagkaroon ng isang malakas na impluwensiya sa kanya. Lyapunov nagtapos sa 1880 at naiiwan sa St Petersburg upang magsagawa ng pananaliksik.