SET OPERATIONS

6. SUMMARY

The basic set operations are Union, Intersection, Difference and Complement

defined as:

 The Union of sets A and B, denoted by A∪B, is the set of all elements, which belong to A or to B or to both.

 The intersection of sets A and B, denoted by A∩B, is the set of

elements, which are common to A and B. If A and B are disjoint then their intersection is the Null set ∅

 The difference of sets A and B, denoted by A – B, is the set of elements which belong to A but which do not belong to B.

 The complement of a set A, denoted by A’, is the set of elements, which do not belong to A, that is, the difference of the universal set U and A.