👉 In mathematics, a subequivalence class is a subset of a larger class that contains all the elements of the larger class that are equivalent to each other. This means that every element in the smaller class has an equivalent (or comparable) element in the larger class. A subequivalence class can be either a proper or an improper subset of the larger class, depending on whether it includes all the elements of the larger class but excludes some or not. For example, consider two sets X and Y
