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POtment
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- 0
Homework Statement
N is the set of natural numbers, Z is the set of all integers
Construct a function a : N -> Z that is both one to one and onto.
Construct a function b : Z -> N that is one to one but not onto.
The Attempt at a Solution
The only attempts have been very wrong - not even sure where to start since in both cases it doesn't seem that a solution is possible.