On tractable parameterizations of graph isomorphism

  • Authors:
  • Adam Bouland;Anuj Dawar;Eryk Kopczyński

  • Affiliations:
  • Massachusetts Institute of Technology, Cambridge, MA;University of Cambridge, Cambridge, UK;University of Warsaw, Warsaw, Poland

  • Venue:
  • IPEC'12 Proceedings of the 7th international conference on Parameterized and Exact Computation
  • Year:
  • 2012

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Abstract

The fixed-parameter tractability of graph isomorphism is an open problem with respect to a number of natural parameters, such as tree-width, genus and maximum degree. We show that graph isomorphism is fixed-parameter tractable when parameterized by the tree-depth of the graph. We also extend this result to a parameter generalizing both tree-depth and max-leaf-number by deploying new variants of cops-and-robbers games.