Law of large numbers for certain cylinder flows
  We construct new examples of cylinder flows, given by skew product extensions of irrational rotations on the circle, that are ergodic and rationally ergodic along a subsequence of iterates. In particular, they exhibit law of large numbers. This is accomplished by explicitly calculating, for a subsequence of iterates, the number of visits to zero, and it is shown that such number has a gaussian distribution. 
Patricia Cirilo, Yuri Lima, Enrique Pujals
math.DS math.PR