The Complexity of Pure Strategy Relevant Equilibria in Concurrent Games

Fuente: arXiv
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Autor principal: Bhaduri, Purandar
Formato: Preprint
Publicado: 2025
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author Bhaduri, Purandar
author_facet Bhaduri, Purandar
contents We study rational synthesis problems for concurrent games with omega-regular objectives. Our model of rationality considers only pure strategy Nash equilibria that satisfy either a social welfare or Pareto optimality condition with respect to an omega-regular objective for each agent. This extends earlier work on equilibria in concurrent games, without consideration about their quality. Our results show that the existence of Nash equilibria satisfying social welfare conditions can be computed as efficiently as the constrained Nash equilibrium existence problem. On the other hand, the existence of Nash equilibria satisfying the Pareto optimality condition possibly involves a higher upper bound, except in the case of Buchi and Muller games, for which all three problems are in the classes P and PSPACE-complete, respectively.
format Preprint
id arxiv_https___arxiv_org_abs_2505_07501
institution arXiv
publishDate 2025
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spellingShingle The Complexity of Pure Strategy Relevant Equilibria in Concurrent Games
Bhaduri, Purandar
Computer Science and Game Theory
Computational Complexity
Formal Languages and Automata Theory
Logic in Computer Science
Multiagent Systems
We study rational synthesis problems for concurrent games with omega-regular objectives. Our model of rationality considers only pure strategy Nash equilibria that satisfy either a social welfare or Pareto optimality condition with respect to an omega-regular objective for each agent. This extends earlier work on equilibria in concurrent games, without consideration about their quality. Our results show that the existence of Nash equilibria satisfying social welfare conditions can be computed as efficiently as the constrained Nash equilibrium existence problem. On the other hand, the existence of Nash equilibria satisfying the Pareto optimality condition possibly involves a higher upper bound, except in the case of Buchi and Muller games, for which all three problems are in the classes P and PSPACE-complete, respectively.
title The Complexity of Pure Strategy Relevant Equilibria in Concurrent Games
topic Computer Science and Game Theory
Computational Complexity
Formal Languages and Automata Theory
Logic in Computer Science
Multiagent Systems
url https://arxiv.org/abs/2505.07501