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Bastien Cabarrou, Patrick Sfumato, Loïc Mourey, Eve Leconte, and Laurent Balardy

vol. 9, n. 103, November 2018, pp. 102–126

Jorge Peña, and Georg Nöldeke

vol. 457, November 2018, pp. 211–220

How the size of social groups affects the evolution of cooperative behaviors is a classic question in evolutionary biology. Here we investigate group size effects in the evolutionary dynamics of games in which individuals choose whether to cooperate or defect and payoffs do not depend directly on...

Jérôme Bolte, Shoham Sabach, and Marc Teboulle

vol. 43, n. 4, November 2018, pp. 1051–1404

We introduce a novel approach addressing global analysis of a difficult class of nonconvexnonsmooth optimization problems within the important framework of Lagrangian-based methods. This genuine nonlinear class captures many problems in modern disparate fields of applications. It features complex...

Renato Gomes, and Jean Tirole

vol. 133, n. 4, November 2018, pp. 2097–2169

Firms often sell a basic good as well as ancillary ones. Hold-up concerns have led to ancillary good regulations such as transparency and price caps. The hold-up narrative, however, runs counter to evidence in many retail settings where ancillary good prices are set below cost (e.g. free shipping,...

Matthieu Bouvard, and Raphaël Lévy

vol. 64, n. 10, October 2018, pp. 4755–4774

In a market where sellers solicit certification to overcome asymmetric infor-mation, we show that the profit of a monopolistic certifier can be hump-shaped in itsreputation for accuracy: a higher accuracy attracts high-quality sellers but sometimesrepels low-quality sellers. As a consequence,...

Bastien Cabarrou, Florence Dalenc, Eve Leconte, Jean Marie Boher, and Thomas Filleron

vol. 101, October 2018, pp. 70–81

In clinical studies of hematologic and oncologic diseases, the outcomes of interest are generally composite time to event endpoints which are usually defined by occurrence of different event types. Nonetheless, clinicians are interested in studying only one event type, which leads to a competing...

Carole Bernard, Christoph Rheinberger, and Nicolas Treich

vol. 64, n. 10, October 2018, pp. 4471–4965

Catastrophe aversion and risk equity are important concepts in both risk management theory and practice. Keeney (1980) was the first to formally define these concepts. He demonstrated that the two concepts are always in conflict. Yet this result is based on the assumption that individual risks are...

Hippolyte D'Albis, and Emmanuel Thibault

vol. 85, n. 3-4, October 2018, pp. 303–319

In this paper, ambiguity aversion to uncertain survival probabilities is introduced in a life-cycle model with a bequest motive to study the optimal demand for annuities. Provided that annuities return is sufficiently large, and notably when it is fair, positive annuitization is known to be the...

Aurélie Ouss, and Arnaud Philippe

vol. 126, n. 5, October 2018, pp. 2134–2178

We explore how television broadcasting of unrelated criminal justice events affects sentencing. Exploiting as-good-as-random variation in news content before a verdict, we find that sentences are 3 months longer when the verdict is reached after coverage of crime. Sentence increase with media...

Adrien Blanchet, and Jérôme Bolte

vol. 25, n. 7, October 2018, pp. 1650–1673

For displacement convex functionals in the probability space equipped with the Monge-Kantorovich metric we prove the equivalence between the gradient and functional type Łojasiewicz inequalities. We also discuss the more general case of λ-convex functions and we provide a general convergence...