Abstract
Equilibrium in choice is a solution-concept for noncooperative games defined in a general framework—the game in choice form. There are two leading ideas of the new definition. One is that the players’ preferences need not be explicitly represented, but earlier accepted solution concepts should be formally derived as particular cases. Secondly, the choice of a player need not be a best reply to the strategy combination of the others, if the choices of the other players are motivated for themselves and a best reply does not exist.
It is shown that in the present framework are included classical models of game theory, and the new concept extends various known noncooperative solutions. The main technical results of the paper concern the existence of the equilibrium in choice. As particular cases, known results on the existence of classical solutions are found. Thus, our approach can be also seen as a general method for proving the existence of different solutions for noncooperative games.
Similar content being viewed by others
References
Nash, J.F.: Equilibrium points in n-person games. Proc. Natl. Acad. Sci. USA 36, 48–49 (1950)
Nash, J.F.: Noncooperative games. Ann. Math. 54, 286–295 (1951)
Shafer, W., Sonnenschein, H.: Equilibrium in abstract economies without ordered preferences. J. Math. Econ. 2, 345–348 (1975)
Stefanescu, A., Ferrara, M.: Implementation of voting operators. J. Math. Econ. 42, 315–324 (2006)
Debreu, G.: A social equilibrium existence theorem. Proc. Natl. Acad. Sci. USA 38, 386–393 (1952)
Fan, K.: Fixed-point and minimax theorems in locally convex topological linear spaces. Proc. Natl. Acad. Sci. USA 38, 121–126 (1952)
Fan, K.: Some properties of convex sets related to fixed point theorems. Math. Ann. 266, 519–537 (1984)
Parthasarathy, K.R.: Probability Measures on Metric Spaces. AMS, Providence (2005)
Nikaido, H., Isoda, K.: Note on noncooperative convex games. Pac. J. Math. 5, 807–815 (1955)
Browder, F.E.: The fixed point theory of multi-valued mappings in topological vector spaces. Math. Ann. 177, 283–301 (1968)
Tan, K.-K., Yu, J., Yuan, X.-Z.: Existence theorems of Nash equilibria for non-cooperative N-person games. Int. J. Game Theory 24, 217–222 (1995)
Köthe, G.: Topological Vector Spaces I. Springer, Berlin (1983)
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by Irinel Chiril Dragan.
Rights and permissions
About this article
Cite this article
Stefanescu, A., Ferrara, M. & Stefanescu, M.V. Equilibria of the Games in Choice Form. J Optim Theory Appl 155, 1060–1072 (2012). https://doi.org/10.1007/s10957-012-0093-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10957-012-0093-7