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Complexity of Extremal Set Decision Problem

M. Atici1
1Department of Computer Science Western Kentucky University Bowling Green KY 42101

Abstract

Let a set [n]={1,2,,n} be given. Finding a subset S of 2[n] with minimum cardinality such that, for any two distinct elements x,y[n], there exist disjoint subsets Ax,AyS such that xAx and yAy is called the \emph{extremal set} problem. In this paper, we define the Extremal Set Decision (ESD) Problem and study its complexity.

Keywords: Extremal set, hash function, complexity