Distance-hereditary graphs are clique-perfect

  • Authors:
  • Chuan-Min Lee;Maw-Shang Chang

  • Affiliations:
  • Department of Computer Science and Information Engineering, National Chung Cheng University, Ming-Hsiung, Chiayi, Taiwan, ROC;Department of Computer Science and Information Engineering, National Chung Cheng University, Ming-Hsiung, Chiayi, Taiwan, ROC

  • Venue:
  • Discrete Applied Mathematics
  • Year:
  • 2006

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Abstract

In this paper, we show that the clique-transversal number τC(G) and the clique-independence number αC(G) are equal for any distance-hereditary graph G. As a byproduct of proving that τC(G) = αC(G), we give a linear-time algorithm to find a minimum clique-transversal set and a maximum clique-independent set simultaneously for distance-hereditary graphs.