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Mathematics, 02.10.2019 23:00 Dweath50

This problem shows that infinite sets behave differ- ently than the finite ones considered in the previous problem. (i) find a function f: z-> z that is injective, but not surjective. (ii) find a function g: zz that is surjective, but not injective. - (iii) find a proper subset s of z (that is, s is not z itself) and a bijective function h: sz.

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