In code A mathematical journey

A TERRIFIC ADVENTURE IN CRYPTOGRAHY. (Simon Singh, author of Fermat's Enigma and The Code Book" "A veritable mathematical travelogue. What every aspiring young scientist and mathematician love, humor, inspiration and a copy of this book." (Richard Mankiewicz, author of The Story of Mathematics)"Whether you're a math fan or have always shied away from it, you'll be hooked on Sarah Flannery's story from the very first page. The amazing life of this young woman and her incredible mathematical journey, told here by herself and her father-tutor, are sure to captivate you like few other human stories!" (Eli Maor, author of To Infinity and Beyond and The Story of a Number""A wonderfully moving story about the thrill of the mathematical chase. Sarah's story should serve as an inspiration not only for all young people contemplating a life in mathematics but for anyone interested in the human spirit and its boundless capacity for innovation and imagination." (John L. Casti, Nature)"A paean to intellectual adventure." (Times Educational Supplement)"An engaging, almost playful, book in which the reader is encouraged to spend lots of time working out mathematical puzzles that are interwoven with a narrative of Sarah's annus mirabilis. What's striking about this account is its level-headed, self-deprecating, eminently sane tone. This is a girl whose head hasn't turned by fame. And that, in a way, is her greatest achievement." (John Naughton, author of A Brief History of the Future.)