Pareto efficiency: Difference between revisions

Made it include cardinal systems
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(Made it include cardinal systems)
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The '''Pareto criterion''' is a basic criterion for evaluating [[voting system|voting systems]]. It can be defined in this way:
 
{{definition|If every voter ranksprefers candidatealternative ''A''X aboveover candidatealternative ''B''Y, then ''B''the mustsystem notprefers beX elected.over Y}}
 
This criterion is important in the context of [[Arrow's impossibility theorem]].
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