Characterizing robust solutions in monotone games

B-Tier
Journal: Games and Economic Behavior
Year: 2022
Volume: 135
Issue: C
Pages: 201-219

Authors (3)

Barthel, Anne-Christine (not in RePEc) Hoffmann, Eric (not in RePEc) Sabarwal, Tarun (University of Kansas)

Score contribution per author:

0.670 = (α=2.01 / 3 authors) × 1.0x B-tier

α: calibrated so average coauthorship-adjusted count equals average raw count

Abstract

In game theory, p-dominance and its set-valued generalizations serve as important robust solution concepts. We show that in monotone games, (which include the broad classes of supermodular games, submodular games, and their combinations) these concepts can be characterized in terms of pure strategy Nash equilibria in an auxiliary game of complete information. The auxiliary game is constructed in a transparent manner that is easy to follow and retains a natural connection to the original game. Our results show explicitly how to map these concepts to corresponding Nash equilibria thereby identifying a new bijection between robust solutions in the original game and equilibrium notions in the auxiliary game. Moreover, our characterizations lead to new results about the structure of entire classes of such solution concepts. In games with strategic complements, these classes are complete lattices. More generally, they are totally unordered. We provide several examples to highlight these results.

Technical Details

RePEc Handle
repec:eee:gamebe:v:135:y:2022:i:c:p:201-219
Journal Field
Theory
Author Count
3
Added to Database
2026-01-29