An Algorithm for Counting the Number of Edge Covers on Acyclic Graphs

نویسندگان

  • J. Raymundo Marcial-Romero
  • Guillermo De Ita
  • J. A. Hernández
  • R. M. Valdovinos
چکیده

Counting the number of edge covers on graphs, denoted as the #Edge Covers problem, is well known to be #Pcomplete. In this paper, we present an algorithm that compute the number of edge covers in polynomial time if and only if the graph is acyclic. Our algorithm is based on a post-order traversal of the spanning tree of the original graph.

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تاریخ انتشار 2015