![Pat Billingsley Pat Billingsley](https://2.bp.blogspot.com/-RA1N6E9r0rU/WVAh3nC814I/AAAAAAACmIU/adT6WIg7gIs03FfX-H5cRH7Vbt-V5pP-QCLcBGAs/s1600/2f4089339709d1fa0324a3b1295be5ae.jpg)
Pat Billingsley
Birthday:
3 May 1925, Sioux Falls, South Dakota, USA
He was a mathematician whose research was mainly devoted to Probability Theory. His book entitled "Probability and Measure" is considered as a classic reference in Probability. In 1958 he became a professor of Mathematics and Statistics at the University of Chicago and retired in 1994. More details can be found at the Wikipedia.