>>39
> supersets

補足
supersetは、subsetの逆だな
あまり使わないかも

https://ejje.weblio.jp/content/superset+of
Weblio記号和英辞書での「superset of」の意味
superset of
記号:⊃
(真)部分集合の逆方向

https://mathworld.wolfram.com/Superset.html
mathworld.wolfram
Superset
A set containing all elements of a smaller set.
If B is a subset of A, then A is a superset of B, written A superset= B.
If A is a proper superset of B, this is written A superset B.