👉 Tweil is a German mathematician who developed the theory of the principle of least action. In this theory, he introduced the concept of a "tweiler" or "twein", which is essentially a mathematical representation of an action in physics. The principle of least action states that for any given action function F(x), the total energy E associated with it is minimized when all the forces acting on the system are directed perpendicular to each other. This concept was central to the development of