Undergraduate Thesis MAJOR IN MATHEMATICS Faculty of Mathematics University of Barcelona AN APPROACH TO N-PERSON COOPERATIVE GAMES Eric` L´opez Ramiro
[email protected] Advisor: Dr. Josep Vives Dept. of Probability, Logic and Statistics Barcelona, January 18, 2016 This page intentionally left blank. Abstract This work is an overview on n-person cooperative games in Game Theory, the mathemat- ical theory of interactive decision situations characterized by a group of agents, each of whom has to make a decision based on their own preferences on the set of outcomes. These situations are called games, agents are players and decisions are strategies. By focusing on Cooperative Game Theory, we analyze concepts such as coalition formation, equilibrium, stability, fairness and the most important proposed solution concepts. Keywords: Cooperative Game Theory, Cooperative game, Shapley value, nucleolus, core, bankruptcy problem, airport problem, indices of power, voting games. Resum Aquest treball tracta sobre els jocs n-personals cooperatius en Teoria de Jocs, la branca de les matem`atiquesque estudia i analitza les interaccions entre una s`erie d'agents que han de prendre una decisi´o,segons les seves prefer`enciessobre el conjunt de possibles resultats dels jocs. En centrar-nos en la Teoria de Jocs Cooperatius, analitzarem conceptes com la formaci´ode coalicions, l'equilibri, la just´ıciai les propostes de conceptes de solucions m´es importants. i Acknowledgements For his continuous help and patient guidance throughout the development of this thesis, I would like to express my deep gratitude, first of all, to my advisor, Dr. Josep Vives. Without his encouragement, persistent advice and useful corrections, this would not have been possible.