P.N.E. Professor's Favorite Equation

A math professor lives in a world of numbers. After an injury, his brain stores memories for only eighty minutes; he remembers no dates, no names, no love, no friendship - nothing but factorials, prime numbers and equations. The housekeeper who takes care of him is far from being a mathematician, but the Professor reveals to her and her son the secret world of numbers, in which simple and understandable quantities are comparable to the scale of the Universe. Every morning they get to know each other anew. Each of their days is filled with the mundane, math, baseball and love. A novel by Yoko Ogawa, one of the most famous writers of modern Japan, about memory, what it means to live in the present, and the mysterious equations that can connect people.