👉 In mathematics, an expiatoriness is a property that refers to how much a set of mathematical objects are alike. It's like saying how similar two sets are when you're looking at them from different perspectives. For example, if you have two sets A and B, the expiatoriness between A and B could be defined as the number of points where they are equal or what fraction of their elements they contain in common. In other words, an expiatoriness is like a measure of similarity
