Benson Farb

Benson Stanley Color ( born October 25, 1967 in Norristown, Pennsylvania) is an American mathematician who deals with geometric group theory, algebra and low-dimensional topology.

He graduated from Cornell University with a bachelor's degree and in 1994 his doctorate under William Thurston at Princeton University ( Relatively hyperbolic and automatic groups with applications to negatively curved manifolds ). Color is a professor at the University of Chicago.

He was from 1999 to 2004 managing editor of Geometriae dedicata.

In 2012 he became a Fellow of the American Mathematical Society.

He is married to the mathematician Amie Wilkinson since 1996.

Writings

• Problem on mapping class groups and related topics, Proc. Symp Pure Appl. Math 74, American Mathematical Society 2006
• RK Dennis: Noncommutative algebra, Graduate Texts in Mathematics 144, Springer Verlag 1993
• A primer on mapping class groups, Princeton University Press 2012
• With Schwartz: The large-scale geometry of Hilbert modular groups. J. Differential Geom 44 (1996 ), no 3, 435-478.
• Relatively hyperbolic groups. Geom Funct. Anal. 8 (1998 ), no 5, 810-840.
• With Shalen: Real - analytic actions of lattices. Invent. Math 135 (1999), no 2, 273-296.
• With Mosher: Quasi - isometric rigidity for the solvable Baumslag - Solitar groups. I.: Invent. Math 131 (1998), no 2, 419-451; II Invent. Math 137 (1999), no 3, 613-649.
• With Mosher: On the asymptotic geometry of abelian -by -cyclic groups. Acta Math 184 (2000), no 2, 145-202.
• With Lubotzky, Minsky: Rank -1 phenomena for mapping class groups. Duke Math J. 106 (2001), no 3, 581-597.
• Brock: Curvature and rank of Teichmüller space. Amer. J. Math 128 (2006), no 1, 1-22.
• With Weinberger: isometries, rigidity and universal covers. Ann. of Math ( 2) 168 (2008 ), no 3, 915-940.