In the model of group identification, Samet and Schmeidler (J Econ Theory 110:213–233, <CitationRef CitationID="CR5">2003</CitationRef>) provide two axiomatic characterizations of the“liberal” decision rule (a person is socially qualified as a member of a collective if and only if he qualifies himself). They impose standard...</citationref>

We provide alternative axiomatic characterizations of the extended egalitarian rules (Moreno-Ternero and Roemer, Econometrica 74:1419–1427, <CitationRef CitationID="CR9">2006</CitationRef>) in a fixed-population setting of the canonical resource allocation model based on individual capabilities (output functions). Our main axioms are...</citationref>

We identify general domain properties that induce the non-existence of efficient, strategy-proof, and non-dictatorial rules in the 2-agent exchange economy. Applying these properties, we establish impossibility results in several restricted domains; for example, the intertemporal exchange...

We analyze a general model of rationing in which agents have baselines, in addition to claims against the (insufficient) endowment of the good to be allocated. Many real-life problems fit this general model (e.g., bankruptcy with prioritized claims, resource allocation in the public health care...