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• #### Cardinality of sets associated to b_3 and b_4 sets ﻿

A subset $\mathcal{A}$ of a finite abelian group $(G,+)$ is called a $B_h$ set on $G$ if all sums of $h$ elements of $\mathcal{A}$ are different. In this paper we state closed formulas for the cardinality of some sets ...
Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Matemáticas.