• Article  

      Self-inverse and exchangeable random variables 

      Cacoullos, Theophilos; Papadatos, Nickos (2013)
      A random variable Z will be called self-inverse if it has the same distribution as its reciprocal Z -1. It is shown that if Z is defined as a ratio, X / Y, of two rv's X and Y (with P[X=0]=P[Y=0]=0), then Z is self-inverse ...