Nonexistence of Lyapunov Exponents for Matrix Cocycles
arXiv:1505.04477 · doi:10.1214/15-AIHP733
Abstract
It follows from Oseledec Multiplicative Ergodic Theorem that the Lyapunov-irregular set of points for which the Oseledec averages of a given continuous cocycle diverge has zero measure with respect to any invariant probability measure. In strong contrast, for any dynamical system with exponential specification property and a Hlder continuous matrix cocycle , we show here that if there exist ergodic measures with different Lyapunov spectrum, then the Lyapunov-irregular set of is residual (i.e., containing a dense set).
arXiv admin note: substantial text overlap with arXiv:0808.0350 by other authors