Havil, Julian

Julian Havil is the author of "Gamma: Exploring Euler s Constant", "Nonplussed!: Mathematical Proof of Implausible Ideas", "Impossible?: Surprising Solutions to Counterintuitive Conundrums", and "The Irrationals: A Story of the Numbers You Can t Count On" (all Princeton). He is a retired former master at Winchester College, England, where he taught mathematics for more than three decades.