Generalized multiple Borel-Cantelli Lemma in dynamics and its applications

Multiple Borel-Cantelli Lemma is a criterion that characterizes the occurrence of multiple rare events on the same time scale. We generalize the multiple Borel-Cantelli Lemma in dynamics established by Dolgopyat, Fayad and Liu J. Mod. Dyn. 18 (2022) 209--289, broadening its applications to encompass several non-smooth systems with absolute continuous measures. Utilizing this generalization, we derive multiple Logarithm Law for hitting time and recurrence of dispersing billiard maps and piecewise expanding maps under some regular conditions, including tent map, Lorentz-like map and Gauss map.