Difference between revisions of "Template:AotD"
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− | ===[[ | + | ===[[Permutation]]=== |
− | + | A '''permutation''' of a [[set]] of <math>r</math> objects is any rearrangement (linear ordering) of the <math>r</math> objects. There are <math>r!</math> (the [[factorial]] of <math>r</math>) permutations of a set with <math>r</math> distinct objects. | |
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+ | One can also consider permutations of [[infinite]] sets. In this case, a permutation of a set <math>S</math> is simply a [[bijection]] between <math>S</math> and... [[Permutation|[more]]] | ||
</blockquote> | </blockquote> |
Revision as of 17:39, 22 January 2008
Permutation
A permutation of a set of objects is any rearrangement (linear ordering) of the objects. There are (the factorial of ) permutations of a set with distinct objects.
One can also consider permutations of infinite sets. In this case, a permutation of a set is simply a bijection between and... [more]