👉 The term "fermillet" is a mathematical concept in algebraic topology that describes a space where all its homotopy groups are finite. It was introduced by J. L. P. W. F. van Kampen in 1932. In algebraic topology, a space X is said to be a "fermillet" if it has the following properties: 1. Every point x of X has a neighborhood U such that the homotopy groups πi(U
