-theoretic approach to aggregation theory inspired by Lauwers and Van Liedekerke (J Math Econ 24(3):217-237, 1995). Diverse applications …. It addresses the question whether there exist non-dictatorial aggregation functions of convex risk measures satisfying … Arrow's impossibility theorem. For infinite electorates, the possibility of rational aggregation depends on an …

-utility preferences are given. A novel proof methodology for special aggregation problems, based on model theory (in the sense of …Cerreia-Vioglio, Ghirardato, Maccheroni, Marinacci and Siniscalchi (Economic Theory, 48:341-375, 2011) have recently …) preference orderings. This paper investigates the problem of Arrovian aggregation of such preferences - and proves dictatorial …

situations with positive probability of human extinction, and is linked to decision theory by yielding rank-dependent expected …