👉 Nonlinearity is a term used in the field of physics and mathematics to describe phenomena that are not linear or straightforward. It refers to the behavior of systems, such as neurons, where the output of one part depends on the input of another part. The term was first introduced by John von Neumann in his work on quantum mechanics, but it has since been applied to a variety of other fields including biology, economics, and computer science. Nonlinearity is characterized by a non-linear relationship between