Social choice and electoral competition in the general spatial model

• 成果类型: Article
• 署名作者: Banks, JS; Duggan, J; Le Breton, M
• 署名单位: University of Rochester; California Institute of Technology; University of Rochester; Universite de Toulouse; Universite Toulouse 1 Capitole; Universite de Toulouse; Universite Toulouse 1 Capitole
• 刊物名称: JOURNAL OF ECONOMIC THEORY
• ISSN/ISSBN: 0022-0531
• DOI: 10.1016/j.jet.2004.08.001
• 发表日期: 2006
• 页码: 194-234
• 关键词: continuum of voters; core; ELECTIONS; Spatial model; uncovered set; undominated set

摘要

This paper extends the theory of the core, the uncovered set, and the related undomiated set to a general set of alternatives and an arbitrary measure space of voters. We investigate the properties of social preferences generated by simple games; we extend results on generic emptiness of the core; we prove the general nonemptiness of the uncovered and undominated sets; and we prove the upper hemicontinuity of these correspondences when the voters' preferences are such that the core is nonempty and externally stable. Finally, we give conditions under which the undominated set is lower hemicontinuous. (c) 2004 Elsevier Inc. All righs reserved.