👉 In mathematics, an exactness is a property of a mathematical object (a set, a function, etc.) that states that it has all its properties or can be expressed by saying that it is a "limit" or "closed form", without any ambiguity. It refers to the fact that the mathematical object does not contain any infinite or infinitesimal values, and it behaves consistently with its inputs and outputs. For example, consider the set of all real numbers: R. An exactness property on