for the consensus problems, in particular in the case of the aggregation of linear orders. First we consider the medians …

We provide a general theorem on the aggregation of preferences under uncertainty. We study, in the Anscombe …-dependent versions of these models). We prove that aggregation is possible and necessarily linear if (society's) preferences are "smooth … possibility of aggregation of non-smooth preferences. …

The paper addresses the problem of extending aggregation operators typically defined on $[0,1]$ to the symmetric … interval $[-1,1]$, where the ``0'' value plays a particular role (neutral value). We distinguish the cases where aggregation … using an interpolation approach, supposing the value of the aggregation to be known for ternary vectors. …

that aggregation is possible and necessarily linear if and only if (society's) preferences are uncertainty neutral. The … number of ways to restore the possibility of aggregation are then discussed. …

We analyze the aggregation problem without the assumption that individuals and society have fully determined and … utilities, where it basically reduces to utilitarianism. In particular, aggregation rules may differ by the relationship between … individual and social indeterminacy. We characterize several subclasses of neutral aggregation rules and show that utilitarian …

We provide a generalization of Harsanyi (1955)'s aggregation theorem to the case of incomplete preferences at the … aggregation rules that are utilitarian in a generalized sense. Strengthening Pareto indifference to Pareto preference provides a …