This chapter introduces the notations and terminology of set theory which was originated in the 1895 by
the German mathematician G. Cantor. In our daily lives, we often use phrases or words such as a
bunch of keys, a pack of cards, a class of students, a team
of players, etc. The words bunch, pack, class and
team all denote a collection of several discrete objects. Also, the dictionary meaning of
set, is a group or a collection
of distinct, definite and distinguishable objects selected by means of some rules or description.
In this chapter, we shall elaborate and discuss the importance of this word in the application of
mathematics, computer science and engineering to real-life problems. Venn diagram representation of sets
can be applied to understand relationship between set theory and logical arguments in Boolean algebra.
Moreover, this concept simplify, clarify and unify many other mathematical concepts