Alliance formation in a multipolar world

Peter Devine, Sumit Joshi and Ahmed Saber Mahmud

Journal of Economic Behavior & Organization, 2024, vol. 223, issue C, 248-277

Abstract: We propose a multilayer network approach to alliance formation. In a signed affinity layer, agents are partitioned into clusters, with friendly relations within and hostile connections across clusters. Agents then form defensive collaborations in an alliance layer as follows: Agents in the same cluster form a nested split graph with degree inversely correlated to the level of hostility, and agents from disparate clusters with high-degree and low-hostility form cliques. Within cliques, agents from a cluster that is “intermediate” in terms of discord serve as a bridge to interconnect agents from more “extreme” clusters.

Keywords: Alliance formation; Signed graphs; Nested split graphs; Pairwise stability; Cliques (search for similar items in EconPapers)
JEL-codes: C72 D74 D85 (search for similar items in EconPapers)
Date: 2024
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Working Paper: Alliance Formation in a Multipolar World (2024)
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Persistent link: https://EconPapers.repec.org/RePEc:eee:jeborg:v:223:y:2024:i:c:p:248-277

DOI: 10.1016/j.jebo.2024.05.008

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