Definition:Stirling Numbers of the Second Kind

Definition
Let:
 * $\delta_{n k}$ denote the Kronecker delta
 * $n$ and $k$ be non-negative integers.

Also see

 * Equivalence of Definitions of Stirling Numbers of the Second Kind


 * Definition:Stirling's Triangles


 * Definition:Stirling Numbers of the First Kind
 * Definition:Pascal's Triangle