Lyapunov Exponent
摘要
The Lyapunov exponent is the average of a function over a projective bundle. The Morse spectrum is an average spectrum of function \(\varphi(x,e)=\text{ln}|Df(x)e|\) over the pseudo-trajectories in a projective bundle. Symbolic image allow us to estimate the Morse spectrum. It has been shown that a system is hyperbolic if the Morse spectrum contains no zero. Homoclinic tangency phenomena have been investigated.