Math 2.0

concept

Stirling numbers of the first kind

Summary

The Stirling numbers of the first kind count the permutations of nn elements with exactly kk cycles. They are the coefficients of the rising and falling factorials as polynomials. The node Stirling numbers of the first kind gives the precise definition.

What this node needs for W2
  • edge instance_of in: at least two examples (0 of 2)
  • edge not_instance_of in: at least one non-example (0 of 1)
  • edge specializes both: the more general notions and the special cases (0 of 1)

The writing levels say how complete the text of a node is. They do not measure its truth.

Sources

  1. Web https://en.wikipedia.org/wiki/Stirling_numbers_of_the_first_kind, Definition by permutation