Would someone please help me with construction of a proof that every invertible function is injection.

Thank you.

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- December 30th 2011, 07:18 PMitproProof of invertibility of injective functions
Would someone please help me with construction of a proof that every invertible function is injection.

Thank you. - December 30th 2011, 10:45 PMFernandoRevillaRe: Proof of invertibility of injective functions