In this paper we provide an axiomatic characterization of separable preferences over intertemporal opportunities satisfying “existences of a dummy alternative”. The two properties of preferences over intertemporal opportunities that implies and is implied by separability are the following:...

In this paper we present some results for preference aggregation functionals defined on rich admissible sets. Our results are concerned with an Independence of Irrelevant Alternatives assumption due to Alan D. Taylor suitably adjusted to be applicable in the framework of preference aggregation...

In this paper we are concerned with the following question. Given an extended preference ordering under what conditions does there exist an empirical stochastic/social choice function which generates it? We use Farkas' lemma to obtain a necessary and sufficient condition under which such a...

We show that any group (or multi-criteria) choice correspondence which satisfies the weak Pareto criterion and the Majority condition must violate the no-spoiler property. Subsequently we strengthen the weak Pareto criterion. We show that if the number of criteria or individuals or states of...