The complexity of pursuit on a graph:

Abstract: "A robber and k cops choose starting vertices in a graph and move in alternation from vertex to vertex along the edges of the graph; capture occurs if a cop ever shares a vertex with the robber. We give an algorithm to determine if k cops are sufficient to ensure capture on a given gr...

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Bibliographic Details
Main Author: Goldstein, Arthur S. (Author)
Format: Book
Language:English
Published: Urbana, Ill. University of Illinois at Urbana-Champaign, Dept. of Computer Science 1992
Subjects:
Summary:Abstract: "A robber and k cops choose starting vertices in a graph and move in alternation from vertex to vertex along the edges of the graph; capture occurs if a cop ever shares a vertex with the robber. We give an algorithm to determine if k cops are sufficient to ensure capture on a given graph. The algorithm is polynomial-time if k is fixed. If k is not fixed and the graph is directed or initial positions are given, we show that the problem is EXPTIME-complete. Similar techniques lead to the PSPACE- and EXPTIME-completeness of some other combinatorial games that were previously only known to be NP- and PSPACE-hard."
Physical Description:22 p. ill. 28 cm

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