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The Bell numbers #1315

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The Bell numbers #1315

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EgbertRijke
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This is just a small addition that we did during a seminar at JHU. The OEIS entry still follows the old scheme, which will be updated in #1211.

bell numbers

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## Idea

The {{#concept "Bell numbers" Agda=bell-number-ℕ WDID=Q816063 WD="Bell number"}}
count the number of ways to partition a set of size $n$. The Bell numbers can be
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Suggested change
count the number of ways to partition a set of size $n$. The Bell numbers can be
[count](univalent-combinatorics.counting.md) the number of ways to [partition](univalent-combinatorics.partitions.md) a [set of size](univalent-combinatorics.finite-types.md) $n$. The Bell numbers can be

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