部ぶ分ぶん集しゅう合ごうぶぶんしゅうごうMeanings1nounsubsetmathematicsMathematical term for a set whose elements are all contained within another set.集しゅう合ごうAが集しゅう合ごうBの部ぶ分ぶん集しゅう合ごうであるとき、A⊆Bと表あらわす。When set A is a subset of set B, we write A⊆B.
