差さ集しゅう合ごう

noun

relative complement; set difference

Mathematical term for the set of elements in one set that are not in another. Often written as A \ B or A − B.

• 集しゅう合ごうAと集しゅう合ごうBの差さ集しゅう合ごうは、Aに属ぞくしBに属ぞくさない要よう素そ全ぜん体たいの集しゅう合ごうです。

  The relative complement of set A and set B is the set of all elements that belong to A but not to B.