Nearly two decades after the [publication][1] of Adam Elga, Self-locating belief and the Sleeping Beauty problem, Analysis, 60(2): 143-147, 2000, there is apparently no consensus as to the resolution of the problem. See Peter Winkler,  [The Sleeping Beauty Controversy][2], The American Mathematical Monthly, Vol. 124, No. 7 (August-September 2017), pp. 579-587


  [1]: https://www.princeton.edu/~adame/papers/sleeping/sleeping.html
  [2]: http://www.jstor.org/stable/10.4169/amer.math.monthly.124.7.579