Thomas A. Garrity is Professor of Mathematics at Williams College in Williamstown, Massachusetts. He was an undergraduate at the University of Texas, Austin, and a graduate student at Brown University, receiving his Ph.D. in 1986. From 1986 to 1989, he was G.C. Evans Instructor at Rice University. In 1989, he moved to Williams College, where he has been ever since except in 1992-3, when he spent the year at the University of Washington, and in 2000-1, when he spent the year at the University of Michigan, Ann ArborGarrity, Thomas A. is the author of 'All the Mathematics You Missed But Need to Know for Graduate School', published 2001 under ISBN 9780521797078 and ISBN 0521797071.