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Computer Science > Multiagent Systems

arXiv:2203.13692 (cs)
[Submitted on 25 Mar 2022 (v1), last revised 18 Oct 2023 (this version, v3)]

Title:Bisimulations for Verifying Strategic Abilities with an Application to the ThreeBallot Voting Protocol

Authors:Francesco Belardinelli, Rodica Condurache, Catalin Dima, Wojciech Jamroga, Michal Knapik
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Abstract:We propose a notion of alternating bisimulation for strategic abilities under imperfect information. The bisimulation preserves formulas of ATL$^*$ for both the {\em objective} and {\em subjective} variants of the state-based semantics with imperfect information, which are commonly used in the modeling and verification of multi-agent systems. Furthermore, we apply the theoretical result to the verification of coercion-resistance in the ThreeBallot voting system, a voting protocol that does not use cryptography. In particular, we show that natural simplifications of an initial model of the protocol are in fact bisimulations of the original model, and therefore satisfy the same ATL$^*$ properties, including coercion-resistance. These simplifications allow the model-checking tool MCMAS to terminate on models with a larger number of voters and candidates, compared with the initial model.
Subjects: Multiagent Systems (cs.MA)
Cite as: arXiv:2203.13692 [cs.MA]
  (or arXiv:2203.13692v3 [cs.MA] for this version)
  https://doi.org/10.48550/arXiv.2203.13692
Related DOI: https://doi.org/10.1016/j.ic.2020.104552

Submission history

From: Wojciech Jamroga [view email]
[v1] Fri, 25 Mar 2022 14:56:20 UTC (180 KB)
[v2] Tue, 25 Apr 2023 13:04:07 UTC (63 KB)
[v3] Wed, 18 Oct 2023 14:44:52 UTC (63 KB)
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