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Compact Metric Spaces with Infinite Cop Number
1Mathematics Institute, University of Warwick, Coventry, CV4 7AL UK.
Abstract:
Mohar recently adapted the classical game of Cops and Robber from graphs to metric spaces, thereby unifying previously studied pursuit-evasion games. He conjectured that finitely many cops can win on any compact geodesic metric space, and that their number can be upper-bounded in terms of the ranks of the homology groups when the space is a simplicial pseudo-manifold. We disprove these conjectures by constructing a metric on with infinite cop number. More problems are raised than settled.
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