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FourierX
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Homework Statement
I am reading a book on relations on function and I am very confused with identity relation and function. Any help on understanding I relation and I function will be appreciated.
Homework Equations
A function from A to B is a relation f from A to B such that
a) the domain of F is A
b) if (x,y) [tex]\in[/tex] to F and (x,z) [tex]\in[/tex] f, then y = z
The Attempt at a Solution
x [tex]\in[/tex] A , IA(x)= x