Abstract
Summary. By the use of finite difference operators a series of combinatorial formulae are obtained. Two applications of the formulae are given. First, the following explicit formulae for the number, ƒ(n), of non-isomorphic equivalence relations among n elements are obtained:
Publisher
Canadian Mathematical Society
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
1. The Number of Partitions of a Set;The American Mathematical Monthly;1964-05
2. The convex hull of sub-permutation matrices;Proceedings of the American Mathematical Society;1958