Busetto, Francesca and Codognaton, Giulio and Tonin, Simone (2017) 'Nondictatorial Arrovian social welfare functions, simple majority rule, and integer programming.', Working Paper. Durham University Business School, Durham.
In this paper, we use the linear programming approach to mechanism design, first introduced by Sethuraman et al. (2003) and then systematized by Vohra (2011), to analyze nondictatorial Arrovian social welfare functions with and without ties. First, we provide a new and simpler proof of Theorem 2 in Kalai and Muller (1977), which characterizes the domains admitting nondictatorial Arrovian social welfare functions without ties. Then, we show that a domain containing an inseparable ordered pair admits nondictatorial Arrovian social welfare functions with ties, thereby strengthening a result previously obtained by Kalai and Ritz (1978). Finally, we propose a reformulation of the simple majority rule in the framework of integer programming with an odd or even number of agents. We use this reformulation to recast some celebrated theorems, proved by Arrow (1963), Sen (1966), and Inada (1969), which provide conditions guaranteeing that the simple majority rule is a nondictatorial Arrovian social welfare function.
|Item Type:||Monograph (Working Paper)|
|Full text:||(VoR) Version of Record|
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|Record Created:||23 May 2019 15:58|
|Last Modified:||04 Jun 2019 16:30|
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