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The comparative statics of dominance

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Listed:
  • Gregorio Curello
  • Ludvig Sinander
  • Mark Whitmeyer

Abstract

In finite problems comprising objects, situations, and an object- and situation-contingent payoff function, we study the comparative statics of the set of undominated objects, meaning those for which there exists no mixture over objects that is superior whatever the situation. We consider both weak and strict dominance (corresponding to different degrees of 'strictness' in the definition of superiority). Our main theorem characterises those payoff transformations which robustly expand the not-weakly-dominated and not-strictly-dominated sets: the necessary and sufficient condition is that payoffs be transformed separately across situations, in either a monotone-concave or a constant manner. We apply our results to Pareto frontiers and games.

Suggested Citation

  • Gregorio Curello & Ludvig Sinander & Mark Whitmeyer, 2025. "The comparative statics of dominance," Papers 2512.15341, arXiv.org.
    • Handle: RePEc:arx:papers:2512.15341
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