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  1.  1
    The Proximity Condition.Conal Duddy & Ashley Piggins - 2012 - Social Choice and Welfare 39 (2-3):353-369.
    We investigate the social choice implications of what we call "the proximity condition". Loosely speaking, this condition says that whenever a profile moves "closer" to some individual's point of view, then the social choice cannot move "further away" from this individual's point of view. We apply this idea in two settings: merging functions and preference aggregation. The precise formulation of the proximity condition depends on the setting. First, restricting attention to merging functions that are interval scale invariant, we prove that (...)
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  2.  23
    Instances of Indeterminacy.Ashley Piggins & Maurice Salles - 2007 - Analyse & Kritik 29 (2):311-328.
    This paper is a survey of how economists and philosophers approach the issue of comparisons. More precisely, it is about what formal representation is appropriate whenever our ability to compare things breaks down. We restrict our attention to failures that arise with ordinal comparisons. We consider a number of formal approaches to this problem including one based on the idea of parity. We also consider the claim that the failure to compare things is a consequence of vagueness. We contrast two (...)
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  3.  17
    Many-Valued Judgment Aggregation: Characterizing the Possibility/Impossibility Boundary.Conal Duddy & Ashley Piggins - unknown
    A model of judgment aggregation is presented in which judgments on propositions are not binary but come in degrees. The primitives are a set of propositions, an entailment relation, and a “triangular norm” which establishes a lower bound on the degree to which a proposition is true whenever it is entailed by a set of propositions. Under standard assumptions, we identify a necessary and sufficient condition for the collective judgments to be both deductively closed and free from veto power. This (...)
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  4.  25
    Population Issues in Social Choice Theory, Welfare Economics, and Ethics, by Charles Blackorby, Walter Bossert, and David Donaldson. Cambridge University Press, 2005, VIII+369 Pages. [REVIEW]Ashley Piggins - 2007 - Economics and Philosophy 23 (2):256-260.
  5.  7
    A Model of Deliberative and Aggregative Democracy.Juan Perote-Peña & Ashley Piggins - 2015 - Economics and Philosophy 31 (1):93-121.
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