1.) Prove that Z+, the set of positive integers, can be expressed as a countably infinite...

1.) Prove that Z+, the set of positive integers, can be expressed as a countably infinite union of disjoint countably infinite sets.

2.) Let A and B be two sets. Suppose that A and B are both countably infinite sets. Prove that there is a one-to-one correspondence between A and B.

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Colby Messinger answered 1 year ago

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