In 1913, a young, unschooled Indian clerk named Srinivasa Ramanujan wrote a letter to G. H. Hardy, begging that pre-eminent English mathematician's opinion on several ideas he had about numbers.

Hardy, realizing the letter was the work of a genius, arranged for Ramanujan to come to England. Thus began one of the most remarkable collaborations ever chronicled.

With a passion for rich and evocative detail, Robert Kanigel takes us from

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Traces the life and work of the man whose nineteenth century inventions led to the development of the computer.

"A startling reevaluation of Lady Byron's marriage and the untold story of her complex life as a single mother and progressive force. Far from a victim or an obstacle to Lord Byron's work, Lady Byron was a rebel against the fashionable snobbery of her class, founding the first Infants School and Co-Operative School in England. A poet and a talented mathematician, Lady Byron supported the education of her precocious daughter, Ada Lovelace, now recognized...