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A Game Theory Proof of Optimal Colorings Resilience to Strong Deviations

Author

Listed:
  • Dario Madeo

    (Department of Information Engineering and Mathematics, University of Siena, Via Roma 56, 53100 Siena, Italy)

  • Chiara Mocenni

    (Department of Information Engineering and Mathematics, University of Siena, Via Roma 56, 53100 Siena, Italy)

  • Giulia Palma

    (Department of Information Engineering and Mathematics, University of Siena, Via Roma 56, 53100 Siena, Italy)

  • Simone Rinaldi

    (Department of Information Engineering and Mathematics, University of Siena, Via Roma 56, 53100 Siena, Italy)

Abstract

This paper provides a formal proof of the conjecture stating that optimal colorings in max k -cut games over unweighted and undirected graphs do not allow the formation of any strongly divergent coalition, i.e., a subset of nodes able to increase their own payoffs simultaneously. The result is obtained by means of a new method grounded on game theory, which consists in splitting the nodes of the graph into three subsets: the coalition itself, the coalition boundary and the nodes without relationship with the coalition. Moreover, we find additional results concerning the properties of optimal colorings.

Suggested Citation

  • Dario Madeo & Chiara Mocenni & Giulia Palma & Simone Rinaldi, 2022. "A Game Theory Proof of Optimal Colorings Resilience to Strong Deviations," Mathematics, MDPI, vol. 10(15), pages 1-14, August.
  • Handle: RePEc:gam:jmathe:v:10:y:2022:i:15:p:2781-:d:881365
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