William Feller

William Feller was a renowned mathematician known for his work in probability theory, which studies randomness and uncertainty. He made significant contributions to understanding how random processes behave—like the movement of particles or stock prices—and developed mathematical tools to analyze these complex systems. His influential books and research helped shape modern probability and statistics, making them more rigorous and applicable across various fields. Feller's work provides a foundation for analyzing unpredictable events in science, engineering, finance, and beyond, helping us better understand and model the randomness inherent in many natural and human-made systems.