Let f be a one-to-one function from A to B, with B being finite. Prove that A is finite.

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- September 21st 2009, 09:56 AMJdg6057Proving finite sets
Let f be a one-to-one function from A to B, with B being finite. Prove that A is finite.

- September 21st 2009, 10:11 AMPlato