theorem and Fishburn's possibility theorem. The proof methodology is based on a model-theoretic approach to aggregation theory … aggregation theory ; variational preferences ; multiple priors preferences ; convex risk measure ; model theory ; first … there exist nondictatorial aggregation functions of convex risk measures satisfying Arrow-type rationality axioms (weak …

. -- Arrow-type preference aggregation ; judgment aggregation ; model theory ; first-order predicate logic ; filter ; ultrafilter …It is well known that the literature on judgment aggregation inherits the impossibility results from the aggregation of … preferences that it generalises. This is due to the fact that the typical judgment aggregation problem induces an ultrafilter on …

Cerreia-Vioglio, Ghirardato, Maccheroni, Marinacci and Siniscalchi (Economic Theory, 48:341-375, 2011) have recently … problem of Arrovian aggregation of MBA preferences - and prove dictatorial impossibility results for both finite and infinite …

-utility preferences are given. A novel proof methodology for special aggregation problems, based on model theory (in the sense of …Cerreia-Vioglio, Ghirardato, Maccheroni, Marinacci and Siniscalchi (Economic Theory, 48:341-375, 2011) have recently …) preference orderings. This paper investigates the problem of Arrovian aggregation of such preferences - and proves dictatorial …

Eliaz (2004) has established a "meta-theorem" for preference aggregation which implies both Arrow's Theorem (1963) and … preference aggregation is the mutual exclusiveness of Pareto optimality, individual responsiveness (preference reversal) and non …-dictatorship. Recent work on judgment aggregation has obtained important generalizations of both Arrow's Theorem (List and Pettit 2003 …

preference and judgment aggregation theory which show that the aggregate of several probability measures should not be conceived … desiderata even for infinite electorates. On the basis of the theory of propositional-attitude aggregation, we argue that this is … the most natural aggregation theory for probability measures. Our aggregation functionals for the case of infinite …

Judgment (or logical) aggregation theory is logically more powerful than social choice theory and has been put to use … aggregation theory developed by Dokow and Holzman (2010c). This application involves aggregating classifications (specifically … aggregation theory to a more general one …

The relationship between propositional model theory and social decision making via premise-based procedures is explored …-respecting, systematic judgment aggregation functions is established. The proof constructs an ultraproduct of profiles, viewed as … other properties of such judgment aggregation functions, in particular sovereignty and monotonicity, as well as an …

emerging social choice theory -, two conflicting ways of dealing with mathematical tools in welfare economics and, above all …