An interesting book, written by an interesting group, is "Who is Fourier". They seem to be mainly undergraduates in Japan who learn and teach each other new lan

An interesting book, written by an interesting group, is "Who is Fourier". They seem to be mainly undergraduates in Japan who learn and teach each other new languages. They took on a similar task to explain Fourier Transforms to each other. Their motivation was to understand the mathematics of languages.