Abstract
The paper studies the structure of external angles of the core of convex TU games. It is shown that the external angle at a vertex of the core is proportional to the number of marginal worth vectors defining the vertex. A notion of difference of two convex compact sets is used to define the Weber set of a TU game and to give another proof of the Weber theorem.
Similar content being viewed by others
References
Danilov VI, Koshevoi GA (2000) Cores of cooperative games, superdifferentials of functions, and the Minkowski difference of sets. J Math Anal Appl 247:1–14
Demyanov VF, Rubinov AM (1995) Constructive nonsmooth analysis. Verl. Peter Lang, Frankfurt a/M
Dragan I, Potters J, Tijs S (1989) Superadditivity for solutions of coalitional games. Lib Math 9:101–110
Gajdos T, Haqyashi T, Tallon JM, Vargnaud JC (2008) Attitude toward imprecise information. J Econ Theory 140:27–65
González-Díaz J, Sánchez-Rodríguez E (2008) Cores of convex and strictly convex games. Games Econ Behav 62:100–105
Grünbaum B (2003) Convex polytopes, graduate texts in mathematics, vol 221, 2nd edn. Springer, Berlin
Ichiishi T (1993) The cooperative nature of the firm. Cambridge University Press, Cambridge
Kuipers J, Vermeulen D, Voorneveld M (2010) A Generalization of the Shapley-Ichiishi result. Int J Game Theory 39:585–602
Pechersky S (1990) Analysis of cooperative games. In: Demyanov VF, Rubinov AM (eds) Foundations of nonsmooth analysis and quasidifferential calculus. Nauka, Moskow, pp 382–394 (in Russian)
Pechersky S (2002) The Steiner point of a convex set and the cooperative games solutions. In: Game theory and applications: proceedings of the international congress of mathematicians 2002 satellite conference on game theory and applications. Qingdao University, Qingdao, P.R. China, pp 637–641
Peleg B, Sudhölter P (2003) Introduction to the theory of cooperative games. Kluver, Dorderecht
Rockafellar RT (1997) Convex analysis. Princeton University Press, Princeton
Rosenmüller J (1981) The theory of games and markets. North-Holland, Amsterdam
Shapley L (1971) Cores of convex games. Int J Game Theory 1:11–26
Shephard GC (1966) The Steiner point of a convex polytope. Can J Math 18:1294–1300
Vasil’ev VA (1981) About one class of imputations in cooperative games. Dokl Akad Nauk SSSR 256:256–286 (in Russian)
Weber RJ (1988) Probabilistic values for games. In: Roth AE (ed) The Shapley value (Essays in Honor of Lloyd S. Shapley). Cambridge University Press, Cambridge, pp 101–119
Acknowledgments
I am very grateful to Elena Yanovskaya, Bernhard von Stengel (Co-Editor), an associate editor and two anonymous referees for their valuable comments and suggestions.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Pechersky, S. A note on external angles of the core of convex TU games, marginal worth vectors and the Weber set. Int J Game Theory 44, 487–498 (2015). https://doi.org/10.1007/s00182-014-0441-y
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00182-014-0441-y