elz, U.M.I., Ann Arbor, MI. 1992 Dynamical Systems and Ergodic Theory, M. Pollicott and M. Yuri, London Mathematical Society, 1998. Introduction to the Modern Theory of Dynamical Systems, A. Katok and B. Hasselblatt, Cambridge University Press, Cambridge, 1995 121 HOUSE_OVERSIGHT_013621 CHAPTER 6: PENTECOSTAL PHASE TRANSITIONS By