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Weighted nucleoli and dually essential coalitions (extended version)

Author

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  • Tamás Solymosi

    (Institute of Economics, Centre for Economic and Regional Studies, Hungarian Academy of Sciences and Department of Operations Research and Actuarial Sciences, Corvinus University of Budapest)

Abstract

We study linearly weighted versions of the least core and the (pre)nucleolus and investigate the reduction possibilities in their computation. We slightly extend some well-known related results and establish their counterparts by using the dual game. Our main results imply, for example, that if the core of the game is not empty, all dually inessential coalitions (which can be weakly minorized by a partition in the dual game) can be ignored when we compute the per-capita least core and the per-capita (pre)nucleolus from the dual game. This could lead to the design of polynomial time algorithms for the per-capita (and other monotone nondecreasingly weighted versions of the) least core and the (pre)nucleolus in specific classes of balanced games with polynomial many dually essential coalitions.

Suggested Citation

  • Tamás Solymosi, 2019. "Weighted nucleoli and dually essential coalitions (extended version)," CERS-IE WORKING PAPERS 1914, Institute of Economics, Centre for Economic and Regional Studies.
    • Handle: RePEc:has:discpr:1914
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    More about this item

    Keywords

    nucleolus; least core; weighted nucleoli; efficient computation; cooperative game;
    All these keywords.

    JEL classification:

    • C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games

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