👉 "Non-expansiveness" is a concept in mathematics that refers to a property of functions, such as polynomials or rational expressions, where their degree is greater than 1. In other words, if f(x) = ax + b for some real constants a and b, then the degree of f(x) must be strictly greater than 1. This means that the function cannot be expressed in terms of higher powers like x^2 or x^3, as they involve linear factors.
