American Institute of Mathematical Sciences

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July  2014, 1(3): 363-375. doi: 10.3934/jdg.2014.1.363

Pure and Random strategies in differential game with incomplete informations

Pierre Cardaliaguet 1, , Chloé Jimenez 2, and  Marc Quincampoix 2,

1. 

CEREMADE, Université Paris-Dauphine, Place du Maréchal de Lattre de Tassigny, 75016 Paris, France
2. 

Laboratoire de Mathématiques de Bretagne Atlantique, CNRS-UMR 6205, Université de Brest, 6, avenue Victor Le Gorgeu, CS 93837, 29238 Brest cedex 3, France, France

Received  November 2012 Revised  May 2013 Published  July 2014

We investigate a two players zero sum differential game with incomplete information on the initial state: The first player has a private information on the initial state while the second player knows only a probability distribution on the initial state. This could be view as a generalization to differential games of the famous Aumann-Maschler framework for repeated games. In an article of the first author, the existence of the value in random strategies was obtained for a finite number of initial conditions (the probability distribution is a finite combination of Dirac measures). The main novelty of the present work consists in : first extending the result on the existence of a value in random strategies for infinite number of initial conditions and second - and mainly - proving the existence of a value in pure strategies when the initial probability distribution is regular enough (without atoms).
Keywords: Wasserstein distance., zero-sum games, incomplete information, Differential games, purification.
Mathematics Subject Classification: Primary: 49N70; Secondary: 91A0.
Citation: Pierre Cardaliaguet, Chloé Jimenez, Marc Quincampoix. Pure and Random strategies in differential game with incomplete informations. Journal of Dynamics & Games, 2014, 1 (3) : 363-375. doi: 10.3934/jdg.2014.1.363
References:
[1]

L. Ambrosio, Lecture Notes on Optimal Transport Problems, Mathematical Aspects of Evolving Interfaces,, CIME Summer School in Madeira, (1812).  doi: 10.1007/978-3-540-39189-0_1.  Google Scholar

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R. Buckdahn, P. Cardaliaguet and M. Quincampoix, Some recent aspects of differential game theory,, Dynamic Games Applications, 1 (2011), 74.  doi: 10.1007/s13235-010-0005-0.  Google Scholar

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R. Buckdahn, J. Li and M. Quincampoix, Value function of differential games without isaacs conditions. An approach with non-anticipative mixed strategies,, Internat. J. of Game Theory, 42 (2013), 989.  doi: 10.1007/s00182-012-0351-9.  Google Scholar

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P. Cardaliaguet, Differential games with asymmetric information,, SIAM J. Control Optim., 46 (2007), 816.  doi: 10.1137/060654396.  Google Scholar

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P. Cardaliaguet and M. Quincampoix, Deterministic differential games under probability knowledge of initial condition,, Int. Game Theory Rev., 10 (2008), 1.  doi: 10.1142/S021919890800173X.  Google Scholar

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P. Cardaliaguet and C. Rainer, Stochastic differential games with assymetric information,, Appl. Math. Optim., 59 (2009), 1.  doi: 10.1007/s00245-008-9042-0.  Google Scholar

[9]

P. Cardaliaguet and C. Rainer, Games with incomplete information in continuous time and for continuous types,, Dyn. Games Appl., 2 (2012), 206.  doi: 10.1007/s13235-012-0043-x.  Google Scholar

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C. Dellacherie and P. A. Meyer, Probabilities and Potential,, North-Holland Mathematics Studies, (1978).   Google Scholar

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J. F. Mertens, S. Sorin and S. Zamir, Repeated Games,, CORE Discussion Papers 9420, (9420).  doi: 10.1057/9780230226203.3424.  Google Scholar

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D. Schmeidler, Equilibrium points of nonatomic games,, Journal of Statistical Physics, 7 (1973), 295.  doi: 10.1007/BF01014905.  Google Scholar

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C. Villani, Topics in Optimal Transportation,, Graduate studies in Mathematics, (2003).  doi: 10.1007/b12016.  Google Scholar

show all references

References:
[1]

L. Ambrosio, Lecture Notes on Optimal Transport Problems, Mathematical Aspects of Evolving Interfaces,, CIME Summer School in Madeira, (1812).  doi: 10.1007/978-3-540-39189-0_1.  Google Scholar

[2]

R. J. Aumann, Mixed and behavior strategies in infinite extensive games,, in Advances in Game Theory, (1964), 627.   Google Scholar

[3]

R. J. Aumann and M. B. Maschler, Repeated Games with Incomplete Information,, MIT Press, (1995).   Google Scholar

[4]

R. Buckdahn, P. Cardaliaguet and M. Quincampoix, Some recent aspects of differential game theory,, Dynamic Games Applications, 1 (2011), 74.  doi: 10.1007/s13235-010-0005-0.  Google Scholar

[5]

R. Buckdahn, J. Li and M. Quincampoix, Value function of differential games without isaacs conditions. An approach with non-anticipative mixed strategies,, Internat. J. of Game Theory, 42 (2013), 989.  doi: 10.1007/s00182-012-0351-9.  Google Scholar

[6]

P. Cardaliaguet, Differential games with asymmetric information,, SIAM J. Control Optim., 46 (2007), 816.  doi: 10.1137/060654396.  Google Scholar

[7]

P. Cardaliaguet and M. Quincampoix, Deterministic differential games under probability knowledge of initial condition,, Int. Game Theory Rev., 10 (2008), 1.  doi: 10.1142/S021919890800173X.  Google Scholar

[8]

P. Cardaliaguet and C. Rainer, Stochastic differential games with assymetric information,, Appl. Math. Optim., 59 (2009), 1.  doi: 10.1007/s00245-008-9042-0.  Google Scholar

[9]

P. Cardaliaguet and C. Rainer, Games with incomplete information in continuous time and for continuous types,, Dyn. Games Appl., 2 (2012), 206.  doi: 10.1007/s13235-012-0043-x.  Google Scholar

[10]

C. Dellacherie and P. A. Meyer, Probabilities and Potential,, North-Holland Mathematics Studies, (1978).   Google Scholar

[11]

J. F. Mertens, S. Sorin and S. Zamir, Repeated Games,, CORE Discussion Papers 9420, (9420).  doi: 10.1057/9780230226203.3424.  Google Scholar

[12]

A. Pratelli, On the equality between Monge's infimum and Kantorovich's minimum in optimal mass transportation,, Ann. Inst. H. Poincaré Probab. Statist., 43 (2007), 1.  doi: 10.1016/j.anihpb.2005.12.001.  Google Scholar

[13]

D. Schmeidler, Equilibrium points of nonatomic games,, Journal of Statistical Physics, 7 (1973), 295.  doi: 10.1007/BF01014905.  Google Scholar

[14]

C. Villani, Topics in Optimal Transportation,, Graduate studies in Mathematics, (2003).  doi: 10.1007/b12016.  Google Scholar

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