👉 Non-deferential, also known as non-reflexive, is a relationship between two sets where one set contains elements that are not in the other set. In other words, if you have a relation R between two sets A and B, then R is non-deferential if for all x in A, there exists an element y in B such that (x, y) does not belong to R. For example: - If we have two sets A = {1, 2