Abstract In this paper, we study the problem of a fair redistribution resources among agents in an exchange economy á la Shitovitz (Econometrica 41:467–501, 1973), with agents’ measure space having both atoms and atomless sector. We proceed by following idea Aubin (Mathematical methods game economic theory. North-Holland, Amsterdam, New York, Oxford, 1979) to allow for partial participation ind...

PROOF: One implication follows from Lemmas 3 and 4. To prove the remaining implication, we show that the domain of all preference profiles that do not admit n-cycles, n= 2 3 satisfies R1 and R2. Fix a profile A that does not admit n-cycles, n= 2 3 To prove that R1 is satisfied, we construct an extension of the partial ordering constructed in the proof of Lemma 5 (the construction did not rely o...

Male Colobus vellerosus compete intensely for access to females, which sometimes leads to mortal wounding. Yet, males often form cooperative relationships to overtake prime-aged males and immigrate into bisexual groups. We investigated the factors that predicted the presence of coalitions and affiliative relationships among males in this species. Interactions among males in 292 dyads from six g...

Electoral coalitions are becoming increasingly popular among opposition parties in Africa because they offer many advantages with respect to reducing party fragmentation and increasing incumbent turnovers. At the same time, however, they are often comprised of parties that are defined predominantly by their leaders’ personalities and exhibit little differentiation in terms of their policy orien...

Individuals in a committee can increase their voting power by forming coalitions. This behavior is shown here to yield a prisoner’s dilemma, in which a subset of voters can increase their power, while reducing average voting power for the electorate as a whole. This is an unusual form of the prisoner’s dilemma in that cooperation is the selfish act that hurts the larger group. Under a simple mo...

The authors studied 37 presumed calcaneonavicular tarsal coalitions from the Hamann-Todd Osteological Collection at the Cleveland Museum of Natural History. The anatomy of the coalitions and the associated subtalar and transverse tarsal joints was quite variable. The coalitions in 8 specimens completely spared the anterior facet of the calcaneus and in 7 specimens it was partially replaced by t...

In some real systems, e.g., sensor networks, individual agents will often need to form coalitions to accomplish complex tasks. Due to communication or computation constrains, it is infeasible for agents to directly interact with all other peers to form coalitions. Most current coalition formation works, however, overlooked this aspect. Those works usually did not provide an explicitly modeled a...