Henri Cohen (born 8 June 1947) is a number theorist, and a professor at the University of Bordeaux. He is best known for leading the team that created the PARI/GP computer algebra system. He introduced the Rankin–Cohen bracket and has written several textbooks in computational and algebraic number theory. Selected publications ; 2nd correct. print 1995; 1st printing 1993 References External links Personal web page Number theorists École Normale Supérieure alumni 20th-century French mathematicians 21st-century French mathematicians 1947 births Living people Academic staff of the University of Bordeaux