One of Publishers Weekly's Best Summer Books 2016. "Formally dazzling, playful and affecting, a new Oulipian classic." — Lauren Elkin, author of Flâneuse and The End of Oulipo? This debut novel by mathematician and Oulipo member Michèle Audin retraces the lives of French mathematicians over several generations through World Wars I and II. The narrative oscillates stylistically from chapter to chapter — at times a novel, fable, historical research, or a diary — locking and unlocking codes, culminating in a captivating, original reading experience. Michèle Audin is the author of several works of mathematical theory and history and also published a work on her anticolonialist father's torture, disappearance, and execution by the French during the Battle of Algiers