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A partial function from a set X (called the domain) to a set Y (called the codomain) is a binary relation over X and Y that is functional, that is, associates with every element in X at most one element in Y. If a partial fuction is total, that is, it is defined for every element in the domain then it is called a total function or simply function. |
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A partial function from a set X (called the domain) to a set Y (called the codomain) is a binary relation over X and Y that is functional, that is, associates with every element in X at most one element in Y. If a partial function is total, that is, it is defined for every element in the domain, then it is called a total function or simply function. |
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