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Representing Powers of Numbers as Subset Sums of Small Sets

โœ Scribed by David Petrie Moulton


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
151 KB
Volume
89
Category
Article
ISSN
0022-314X

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โœฆ Synopsis


We investigate a number of questions concerning representations of a set of numbers as sums of subsets of some other set. In particular, we obtain several results on the possible sizes of the second set when the first set consists of a geometric sequence of integers, partially answering a generalisation of a question of Gerry Myerson.


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A Method to Count the Positive 3-Subsets
โœ Giuseppe Marino; Giampiero Chiaselotti ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 99 KB

Let a 1 , . . . , a n be n real numbers with non-negative sum. We show that if n โ‰ฅ 12 there exist at least n-1 2 subsets of {a 1 , . . . , a n } with three elements which have non-negative sum.