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Document Type

Research

Abstract

Given a set of numbers {A1}=a1 …., an, we may represent the sum of the products, taken r at a time, of the first k numbers of the set by S(ai,r,k). Obviously S(ai,r,k)=S(ai,r,k-l)+akS (ai,r-1,k-1) for r, k>1. If in addition we define S (ai,o,k) =1 for k>0 the relation holds for r,k=0. Also S(ai,r,k)=O for k

Publication Date

1930

Journal Title

Proceedings of the Iowa Academy of Science

Volume

37

Issue

1

First Page

293

Last Page

293

Copyright

© Copyright 1930 by the Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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