noun
equivalence class
Technical term in mathematics; used in set theory and abstract algebra to group elements that are equivalent under a given equivalence relation.
整数を偶数と奇数の同値類に分ける。
Divide the integers into equivalence classes of even and odd numbers.
Compound of 同値 (dōchi, 'equivalence') and 類 (rui, 'class, category'). A direct translation of the English mathematical term 'equivalence class'.