Joseph Doob

Joseph Doob was an influential American mathematician known for his work in probability theory and statistics. Born in 1910, he made significant contributions to the mathematical foundation of probability, particularly through his development of measure theory and stochastic processes. His most notable achievement is the formulation of Doob's martingale theory, which has applications in various fields, including finance and economics. Doob's research helped lay the groundwork for much of modern probability and has influenced both theoretical and applied mathematics. He also authored notable textbooks that are widely used in the study of probability and statistics.