Michael Harris

Michael Howard Harris (born 1954) is an American mathematician known for his work in number theory. He is a professor of mathematics at Columbia University and professor emeritus of mathematics at Université Paris Cité, and in 2025 he was elected to the American Philosophical Society. He was born in Kingsessing, Philadelphia, Pennsylvania, and is of Jewish descent. He received his bachelor's degree in mathematics from Princeton University in 1973 and his master's degree and doctorate from Harvard University under Barry Mazur in 1976 and 1977. He was a faculty member at Brandeis University from 1977 to 1994, then became a professor at Paris Diderot University and the Institut de mathématiques de Jussieu, where he has been emeritus since 2021, and he joined Columbia University in 2013.