👉 In mathematics, a postmaximal set is a subset of a given set that contains all its maximum elements. The term "postmaximal" comes from the fact that it is the smallest set containing all the elements of the given set, which would be the largest set if no such set existed. For example, consider the set {1, 2, 3, 4}. In this case, any postmaximal set would contain all the maximum elements of the given set. However
