William; Schilling Wojbor A. (Eds.): Feller

William Feller was a Croatian-American mathematician renowned for his foundational contributions to probability theory, including the central limit theorem, law of the iterated logarithm, and studies on Brownian motion and diffusion processes.[2][4] Born in Zagreb, he held academic positions at universities in Kiel, Stockholm, Brown, Cornell, and Princeton, becoming a U.S. citizen in 1944 and authoring the seminal two-volume work 'An Introduction to Probability Theory and Its Applications'.[3][4] He died in New York in 1970, leaving a lasting legacy in mathematical statistics.[4]