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2013
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# Andras Kramli

Dugonics ter 13, 6720, Szeged, Hungary
University of Szeged, Szeged, Hungary

## Publications:

 Kramli A. The problem of recurrence for the planar Lorentz gas 2003, vol. 8, no. 4, pp.  395-411 Abstract This paper is a brief survey of solving the problem of the recurrence for planar Lorentz process. There are two different ways to do this. 1. Using Lai-Sang Young's construction [27] one proves the local central limit theorem from which Pólya's theorem is then deduced — this is the method of D.Szász and T.Varjú [25]. 2. Klaus Schmidt [21] and J.-P.Conze [8] proved that the recurrence of the planar Lorentz process follows from the global central limit theorem, established by Bunimovich and Sinai [7]. The history of the problem and the main ingredients of the proofs are given. The details of K.Schmidt's method are analysed in the Appendix written by V.Bognár. Citation: Kramli A.,  The problem of recurrence for the planar Lorentz gas , Regular and Chaotic Dynamics, 2003, vol. 8, no. 4, pp. 395-411 DOI:10.1070/RD2003v008n04ABEH000253