The capture time of the hypercube

In the game of Cops and Robbers, the capture time of a graph is the minimum number of moves needed by the cops to capture the robber, assuming optimal play. We prove that the capture time of the $n$-dimensional hypercube is $Θ(n\ln n).$ Our methods include a novel randomized strategy for the players, which involves the analysis of the coupon-collector problem.

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