Proceedings of the American Mathematical Society

ISSN 1088-6826(online) ISSN 0002-9939(print)



A note on sum-free sets of integers

Author: Mên Ch’ang Hu
Journal: Proc. Amer. Math. Soc. 80 (1980), 711-712
MSC: Primary 05A17; Secondary 10L05
MathSciNet review: 587962
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Abstract: A set S of integers is said to be sum-free if $ a,b \in S$ implies $ a + b \notin S$. Let $ g(n,k)$ denote the cardinality of a largest subset of $ \{ 1,2, \ldots ,n\} $ that can be partitioned into k sum-free sets. In this note we show that $ g(n,2) = n - [n/5]$.

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Keywords: Sum-free set
Article copyright: © Copyright 1980 American Mathematical Society