This is an automated email from the ASF dual-hosted git repository. aherbert pushed a commit to branch master in repository https://gitbox.apache.org/repos/asf/commons-numbers.git
commit 517b60d4db51eb60274c879850804abf1e779d67 Author: aherbert <[email protected]> AuthorDate: Wed Nov 9 12:27:30 2022 +0000 Add Stirling number of the first kind to the user guide --- src/site/apt/userguide/index.apt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/site/apt/userguide/index.apt b/src/site/apt/userguide/index.apt index c7c3f672..f140f894 100644 --- a/src/site/apt/userguide/index.apt +++ b/src/site/apt/userguide/index.apt @@ -295,7 +295,10 @@ list.forEach(c -> System.out.println(Arrays.toString(c))); [3, 4, 5] +------------------------------------------+ - The <<<Stirling>>> class can evaluate Stirling numbers of the second kind \( S(n, k) \). This is + The <<<Stirling>>> class can evaluate Stirling numbers of the first kind and second kind. + The Stirling numbers of the first kind \( s(n, k) \) arise in the study of permutations, + particularly counting the permutations of a set according to their number of cycles. + The Stirling number of the second kind \( S(n, k) \) is the number of ways of partitioning a set of \( n \) elements into \( k \) non-empty subsets. For example a set of 3 elements may be partitioned into:
