👉 Reductive is a mathematical concept in algebra and abstract algebra, which refers to a polynomial of degree n that has at most n variables. In other words, it's a polynomial with fewer variables than its degree. For example, consider the polynomial: \[ f(x) = 2x^3 - x + 5 \] This polynomial is reductive because it has exactly two variables (x and y), which are both of lower degree than n=3.