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On the relation between Sion's minimax theorem and existence of Nash equilibrium in asymmetric multi-players zero-sum game with only one alien

Atsuhiro Satoh, Yasuhito Tanaka

arXiv 17 Jun 2018 · Econometrics

arXiv:1806.07253 · PDF · DOI · OpenAlex · Extracted main text

Abstract

We consider the relation between Sion's minimax theorem for a continuous function and a Nash equilibrium in an asymmetric multi-players zero-sum game in which only one player is different from other players, and the game is symmetric for the other players. Then, 1. The existence of a Nash equilibrium, which is symmetric for players other than one player, implies Sion's minimax theorem for pairs of this player and one of other players with symmetry for the other players. 2. Sion's minimax theorem for pairs of one player and one of other players with symmetry for the other players implies the existence of a Nash equilibrium which is symmetric for the other players. Thus, they are equivalent.

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10
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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1Kindler, J (2005) A simple proof of Sion's minimax theorem0.51121100%
2Tanaka, Y (2013) Equivalence of Cournot and Bertrand equilibria in differentiated duopoly under relative profit maximization with linear demand self0.40511100%
3Satoh, A. and Y. Tanaka (2014) Relative profit maximization and equivalence of Cournot and Bertrand equilibria in asymmetric duopoly self0.40511100%
4Tanaka, Y (2013) Irrelevance of the choice of strategic variables in duopoly under relative profit maximization self0.40511100%
5Satoh, A. and Y. Tanaka (2013) Relative profit maximization and Bertrand equilibrium with quadratic cost functions self0.40511100%
6Komiya, H (1988) Elementary proof for Sion's minimax theorem0.40511100%
7Matsumura, T., N. Matsushima and S. Cato (2013) Competitiveness and R&D competition revisited0.40511100%
8Vega-Redondo, F (1997) The evolution of Walrasian behavior0.40511100%
9Sion, M (1958) On general minimax theorems0.40511100%
10Satoh, A. and Y. Tanaka (2014) Relative profit maximization in asymmetric oligopoly self0.40511100%

Showing the top 10 of 10 scored citations.