A Characterization of Complexity in Public Goods Games
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We complete the characterization of the computational complexity of equilibrium in public goods games on graphs by proving that the problem is NP-complete for every finite non-monotone best-response pattern. This answers the open problem of [Gilboa and Nisan, 2022], and completes the answer to a question raised by [Papadimitriou and Peng, 2021], for all finite best-response patterns.
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