👉 In mathematics, a counterorder is an equivalence relation on a set of real numbers. It's defined as follows: - A relation R on a set S (where S is a non-empty set) is called a counterorder if for all x and y in S, if xRy then x+y is also R. For example, let S = {1, 2, 3}. The relation R = {(x, y) ∈ S × S | x < y} is
