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A function is bijective if and only if has an inverse November 30, 2015 Definition 1. Let f : A → B. We say that f is surjective if for all b ∈ B, there exists an a ∈ A such that f (a) = b. We say that f is injecti
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Document Date: 2015-12-04 19:21:56
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A function is bijective if and only if has an inverse November 30, 2015 Definition 1. Let f : A → B. We say that f is surjective if for all b ∈ B, there exists an a ∈ A such that f (a) = b. We say that f is injecti