Richard Evan Schwartz (born August 11, 1966) is an American mathematician notable for his contributions to geometric group theory and to an area of mathematics known as billiards. Geometric group theory is a relatively new area of mathematics beginning around the late 1980s[1] which explores finitely generated groups, and seeks connections between their algebraic properties and the geometric spaces on which these groups act. He has worked on what mathematicians refer to as billiards, which are dynamical systems based on a convex shape in a plane. He has explored geometric iterations involving polygons,[2] and he has been credited for developing the mathematical concept known as the pentagram map. In addition, he is author of a mathematics picture book for young children.[3] In 2018 he is a professor of mathematics at Brown University.
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