Exploiting different tangent cones, many derivatives for set-valued functions have been introduced and considered to study optimality. The main goal of the paper is to address a general concept of K-epiderivative and to employ it to develop a quite general scheme for necesary optimality...

The Economics of Happiness already recognizes how procedures affect the evaluation of outcomes, although this has only been looked at within the standard framework of substantial rationality. This paper aims to go beyond that kind of approach by linking happiness and procedural rationality,...

The economics of happiness already recognizes how procedures affect the evaluation of outcomes, although this has only been looked at within the standard framework of substantial rationality. This paper aims to go beyond that kind of approach by linking happiness and procedural rationality,...

This paper investigates the relevance of reputation to improve the explorative capabilities of agents in uncertain environments. We have presented a laboratory experiment where sixty-four subjects were asked to take iterated economic investment decisions. An agent-based model based on their...

Equilibrium problems provide a mathematical framework which includes optimization, variational inequalities, fixed-point and saddle point problems, and noncooperative games as particular cases. This general format received an increasing interest in the last decade mainly because many theoretical...

This paper presents the results of laboratory experiments on the relevance of reputation for trust and cooperation in social interaction. We have extended a repeated investment game by adding new treatments where reputation is taken more explicitly into account than before. We then compared...

The importance of reputation in human societies is highlighted both by theoretical models and empirical studies. In this paper, we have extended the scope of previous experimental studies based on trust games by creating treatments where players can rate their opponents' behavior and know their...