: Mathématiques: Bell number

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mathematical analysis > combinatorics > Bell number

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Bell number

In combinatorial mathematics, the Bell numbers count the possible partitions of a set. These numbers have been studied by mathematicians since the 19th century, and their roots go back to medieval Japan. In an example of Stigler's law of eponymy, they are named after Eric Temple Bell, who wrote about them in the 1930s.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Bell_number)

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