Set Theory Definitions
Set – is a collection of objects or elements.
Elements – the objects that make up a set.
Null Set (empty set) – a set with no elements (it
is a subset of every set).
Union- The set of all the elements in two or
more given sets.
Intersection – The set of all the elements that
are common to two or more given sets.
Disjoint sets – A set with no elements in
common.
Universal Set (Parent Set) – A set containing all
elements considered in a given problem; serves
as an encompassing set for various subsets.
Subset – A set whose elements are all members
of another set.
Complement – The set of all elements in the
universal set that are not in a given set, which is
a subset of the universal set.