User talk:10lbs of potatoes
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* If X and Y are finite sets with the same cardinality, and f: X → Y, then the following are equivalent:
1. f is a bijection.
2. f is a surjection.
3. f is an injection.
Oh yes, don't forget to sign when you write on talk pages, simply type four tildes, like this: (~~~~). This will automatically add your name and the time after your comments. And finally, if you have any questions or doubts, don't hesitate to contact me on my talk page. Once again, welcome! =)- Mailer Diablo 18:11, 22 March 2006 (UTC)
[edit] Robert Zimmer (diambiguation)
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