1. The Bell number B(n) is the number of all set partitions of [n] = {1,..., n}, regardless of size. In other words, B(n) = Σk-1 S(n, k). Prove the following identity: n = Σ (7) B(₁ B(i) i=0 B(n + 1) = Σ
1. The Bell number B(n) is the number of all set partitions of [n] = {1,..., n}, regardless of size. In other words, B(n) = Σk-1 S(n, k). Prove the following identity: n = Σ (7) B(₁ B(i) i=0 B(n + 1) = Σ
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.7: Distinguishable Permutations And Combinations
Problem 15E
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