👉 The term "hereditarily" is a mathematical concept that refers to a property of a set or a function. In other words, it means that the operation (or function) in question operates on elements within the set or function itself. For example, if we have a set {a, b, c}, and we define a new function f: {a, b, c} → {a, b, c} as follows: f(a) = 2 f(b)