How to describe all the functions which are also equivalence relations

(Happy)

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- January 12th 2010, 07:20 AMkoukou8617equivalence relations
How to describe all the functions which are also equivalence relations

(Happy) - January 12th 2010, 07:28 AMDrexel28
- January 12th 2010, 07:30 AMPlato
- January 12th 2010, 07:17 PMJose27
I guess he's thinking of a function as this: such that for every there exists a unique such that from which it follows immediately that if is to be an equivalence relation then (because of reflexivity) ie.