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Consistency and Monotonicity in One-Sided Assignment Problems

Author

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  • Bettina-Elisabeth Klaus

    () (Harvard Business School, Negotiation, Organizations & Markets Unit)

  • Alexandru Nichifor

    () (Department of Economics, Maastricht University)

Abstract

One-sided assignment problems combine important features of two well-known matching models. First, as in roommate problems, any two agents can be matched and second, as in two-sided assignment problems, the payoffs of a matching can be divided between the agents. We take a similar approach to one-sided assignment problems as Sasaki (1995) for two-sided assignment problems and we analyze various desirable properties of solutions including consistency and weak pairwise-monotonicity. We show that for the class of solvable one-sided assignment problems (i.e., the subset of one-sided assignment problems with a non-empty core), if a subsolution of the core satisfies [indifference with respect to dummy agents, continuity, and consistency] or [Pareto indifference and consistency], then it coincides with the core (Theorems 1 and 2). However, we also prove that on the class of all one-sided assignment problems (solvable or not), no solution satisfies consistency and coincides with the core whenever the core is non-empty (Theorem 3). Finally, we comment on the difficulty in obtaining further positive results for the class of solvable one-sided assignment problems in line with Sasaki's (1995) characterizations of the core for two-sided assignment problems.

Suggested Citation

  • Bettina-Elisabeth Klaus & Alexandru Nichifor, 2009. "Consistency and Monotonicity in One-Sided Assignment Problems," Harvard Business School Working Papers 09-146, Harvard Business School.
  • Handle: RePEc:hbs:wpaper:09-146
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    References listed on IDEAS

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    Cited by:

    1. Talman, Dolf & Yang, Zaifu, 2011. "A model of partnership formation," Journal of Mathematical Economics, Elsevier, vol. 47(2), pages 206-212, March.

    More about this item

    Keywords

    (One-sided) assignment problems; consistency; core; matching.;

    JEL classification:

    • C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games
    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory
    • D63 - Microeconomics - - Welfare Economics - - - Equity, Justice, Inequality, and Other Normative Criteria and Measurement

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