Karl Jones: Created page with "In combinatorics, the '''twelvefold way''' is a name given to a systematic classification of twelve related enumerative problems concerning two finite sets, which include..."

2017-04-04T21:00:58Z

Created page with "In combinatorics, the '''twelvefold way''' is a name given to a systematic classification of twelve related enumerative problems concerning two finite sets, which include..."

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In [[combinatorics]], the '''twelvefold way''' is a name given to a systematic classification of twelve related enumerative problems concerning two finite sets, which include the classical problems of counting permutations, combinations, multisets, and partitions either of a set or of a number.

The idea of the classification is credited to Gian-Carlo Rota, and the name was suggested by Joel Spencer.

== See also ==

== External links ==

* [https://en.wikipedia.org/wiki/Twelvefold_way Twelvefold way] @ Wikipedia

[[Category:Combinatorics]]
[[Category:Mathematics]]

Twelvefold way - Revision history

Karl Jones: Created page with "In combinatorics, the '''twelvefold way''' is a name given to a systematic classification of twelve related enumerative problems concerning two finite sets, which include..."