Complex sentence: William Stein (born February 21,1974 in Santa Barbara, California) is an associate professor of mathematics at the University of Washington who is best known as the lead developer of Software for Algebra and Geometry Experimentation.
Split into simpler sentences: William Stein (born February 21,1974 in Santa Barbara, California) is an associate professor of mathematics at the University of Washington. He is best known as the lead developer of Software for Algebra and Geometry Experimentation.