Question: EXERCISES 3.28. Let A and B be nonempty sets. Prove that a function f: A-, B is bijective if and only if there exists a

EXERCISES 3.28. Let A and B be nonempty sets. Prove that

EXERCISES 3.28. Let A and B be nonempty sets. Prove that a function f: A-, B is bijective if and only if there exists a function g: B - A such that gof- iA and f o g=1B

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