ON ENTROPY OF Φ-IRREGULAR AND Φ-LEVEL SETS IN MAPS WITH THE SHADOWING PROPERTY

摘要

We study the properties of Φ-irregular sets (sets of points for which the Birkhoff average diverges) in dynamical systems with the shadowing property. We estimate the topological entropy of Φ-irregular set in terms of entropy on chain recurrent classes and prove that Φ-irregular sets of full entropy are typical. We also consider Φ-level sets (sets of points whose Birkhoff average is in a specified interval), relating entropy they carry with the entropy of some ergodic measures. Finally, we study the problem of large deviations considering the level sets with respect to reference measures.