On the Existence of Pure and Mixed Strategy Nash Equilibria in Discontinuous Games

Econometrica ◽  
1999 ◽  
Vol 67 (5) ◽  
pp. 1029-1056 ◽  
Author(s):  
Philip J. Reny
2020 ◽  
Vol 12 (1) ◽  
pp. 439-470
Author(s):  
Philip J. Reny

We review the discontinuous games literature, with a sharp focus on conditions that ensure the existence of pure and mixed strategy Nash equilibria in strategic form games and of Bayes-Nash equilibria in Bayesian games.


2019 ◽  
Vol 21 (04) ◽  
pp. 1950004
Author(s):  
Rabia Nessah ◽  
Tarik Tazdait

We introduce a new notion of continuity, called quasi-transfer continuity, and show that it is enough to guarantee the existence of Nash equilibria in compact, quasiconcave normal form games. This holds true in a large class of discontinuous games. We show that our result strictly generalizes the pure strategy existence theorem of Carmona [Carmona, G. [2009] An existence result for discontinuous games, J. Econ. Theory 144, 1333–1340]. We also show that our result is neither implied by nor does it imply the existence theorems of Reny [Reny, J. P. [1999] On the existence of pure and mixed strategy Nash equilibria in discontinuous games, Econometrica 67, 1029–1056] and Baye et al. [Baye, M. R., Tian, G. and Zhou, J. [1993] Characterizations of the existence of equilibria in games with discontinuous and nonquasiconcave payoffs, Rev. Econ. Studies 60, 935–948].


2017 ◽  
Vol 45 (4) ◽  
pp. 362-365 ◽  
Author(s):  
Zhe Yang ◽  
Dawen Meng ◽  
Anqiang Wang

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