The complement of a set is the set of all things that are not in . Put simply, the complement is its opposite.
Where denotes the universe, . That is, is the Relative complement of and .
https://arbital.com/p/set_absolute_complement
by M Yass Aug 6 2016 updated Aug 6 2016
The complement of a set is the set of all things that are not in . Put simply, the complement is its opposite.
Where denotes the universe, . That is, is the Relative complement of and .