So there are similarities as well as differences. Lam King-fui, 15, Carmel Bunnan Tong Memorial Secondary School: The math symbol in my family is the division sign (÷) . In my family, everyone ...

This is just one of many untold histories in The Language of Mathematics: The Stories behind the Symbols by author and mathematician Raúl Rojas. In it, Rojas explores the complex, and sometimes ...