impossibility results for free ultrafilters: The domain of an ultraproduct over a free ultrafilter extends the individual factor … preferences that it generalises. This is due to the fact that the typical judgment aggregation problem induces an ultrafilter on …, dictatorship then immediately follows from the principality of an ultrafilter on a finite set. This is not the case for an infinite …

-type rationality axioms are shown to be restricted reduced product constructions with respect to the filter of decisive coalitions; an … oligarchic impossibility result follows. Under stronger assumptions, aggregators are restricted ultraproduct constructions …

-type rationality axioms are shown to be restricted reduced product constructions with respect to the filter of decisive coalitions; an … oligarchic impossibility result follows. Under stronger assumptions, aggregators are restricted ultraproduct constructions …

-type rationality axioms are shown to be restricted reduced product constructions with respect to the filter of decisive coalitions; an … oligarchic impossibility result follows. Under stronger assumptions, aggregators are restricted ultraproduct constructions …

(ultra)filter method in social choice theory. From the (ultra)filter property of the set of winning coalitions, one obtains …

ultraproduct of the reals with respect to the ultrafilter of decisive coalitions; this construction explicitly determines the …

-respecting, systematic judgment aggregation functions is established. The proof constructs an ultraproduct of profiles, viewed as … propositional structures, with respect to the ultrafilter of decisive coalitions. This representation theorem can be used to prove …

-respecting, systematic judgment aggregation functions is established. The proof constructs an ultraproduct of profiles, viewed as … propositional structures, with respect to the ultrafilter of decisive coalitions. This representation theorem can be used to prove …