As a young girl, Katya Geller learned from her mother that math was the answer to everything. Now, at forty, she finds this wisdom tested: she has lost the love of her life, she is in the middle of a divorce, and has just found out that her mother is dying. Half-mad with grief, Katya turns to the unfinished notes for her mother's last textbook, hoping to find guidance in mathematical concepts. With humor, intelligence, and unfailing honesty, Katya...

"A heartwarming and refreshing debut novel that proves one thing: there's not enough data in the world to predict what will make your heart tick. Stella Lane thinks math is the only thing that unites the universe. She comes up with algorithms to predict customer purchases--a job that has given her more money than she knows what to do with, and way less experience in the dating department than the average thirty-year-old. It doesn't help that Stella...