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WEEK EIGHT
MAPPING AND FUNCTIONS
CONTENT
Definition OF Mapping and Functions
Types of Mapping and function
SUB TOPIC: DEFINITION AND PROPERTIES OF MAPPING AND FUNCTION
A mapping is a rule which assigns every element in a set A to a distinct element in a set B, given that A and B are two non- empty sets. In set notation form, the rule which assigns an element ϵ A a unique element ϵ B, is called a mapping. The set A is called the Domain of the mapping while the set B is called the Co-domain.
The operative rule in all such assignment must be that “no child can have two fathers”, meaning, no one elements in the domain should be mapped to two elements in the co-domain.
If the rule which associates each element ϵ A, a unique element ϵ B is denoted by the mapping between the set A and the set B can be
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