Difference between revisions of "Correspondence"
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* [http://www.artofproblemsolving.com/Forum/viewtopic.php?p=464897#p464897 AIME 2006I/4] | * [http://www.artofproblemsolving.com/Forum/viewtopic.php?p=464897#p464897 AIME 2006I/4] | ||
| + | * [http://www.artofproblemsolving.com/Forum/viewtopic.php?p=384179#p384179 AIME 2001I/6] | ||
=== See also === | === See also === | ||
* [[Combinatorics]] | * [[Combinatorics]] | ||
Revision as of 10:36, 19 June 2006
(Also called bijection.)
Building one-to-one correspondence is correspondence each element of a set to one and only one element of another set. This is often the key to greatly simplifying a problem.
