Iteration theory has its roots in the operation of substituting functions into itself. This has led to questions like that of the behaviour of functions by repe

The journal aequationes mathematicae publishes papers in pure and applied mathematics and, in particular, articles on functional equations, combinatorics and dy

This is the first collective study of a foundational text in modern philosophy and logic, Gottlob Frege's Basic Laws of Arithmetic. Twenty-two Frege scholars di