Limits: 1s, 256 MB

In mathematics, especially in set theory, a set A is a subset of a set B, or equivalently B is a superset of A if A is “contained” inside B, that is, all elements of A are also elements of B [source:https://en.wikipedia.org/wiki/Subset ].

This is a companion discussion topic for the original entry at https://toph.co/p/subset-multiplication