Abstract

Given a finite graph G=( V, E), what is the minimum number c( G) of incidence tests which are needed in the worst case to identify an unknown edge e* ϵE? The number c( G) was first studied by Aigner and Triesch (1988), where it was shown that for almost all graphs in the random graph model G(n, P( edge)=p), 0<p<1 fixed, c( G)⩾ n− d( n), where d( n)=(2log n/log(1/1− p))+ O(loglog n). We prove that for each η< 1 2 , almost all graphs satisfy c( G)⩽ n− ηd( n).

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