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./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_F0001.gif 

DOI: 10.1080/02331887508801241
Publication Frequency: 6 issues per year
Published in: journal Statistics, Volume 6, Issue 4 1975 , pages 627 - 639
Formats available: PDF (English)
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Abstract

The paper gives sufficient conditions for the existence of Nash equilibrium points in a class of n-person noncooperative games with the pay-offs which are the limits of decreasing sequences of continuous functions. A situation ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0001.gif  in the game./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_UM0001.gif can be characterized by a set of functions./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_UM0002.gif each being defined on the set of situations ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0002.gif . Putting ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0003.gif  the product element ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0004.gif  may be associated with each situation. The set ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0005.gif  with a topology of simple convergence is said to be,N continuous at the point ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0006.gif , if there exists a sequence ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0007.gif  for any ε> 0; which converges to ξ in ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0008.gif  that is ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0009.gif  where Dεn) is a set of points in which the variation of the function ξn is not less than ε. The following theorem is proved: Let Xi be compact spaces, Hn be limited BAIRE upper semi-continuous functions spaces, ./GSTA_A_8801241_O_XML_IMAGES/GSTA_A_8801241_O_ILM0010.gif  be N-continuous in each point. Then the game Г possesses an equilibrium point in mixed strategies. - The proof of the theorem is based on a. number of auxiliary propositions; given is the paper and is illustrated by an example.
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