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Apr 24, 2014 at 7:18 comment added Gil Kalai Joël, Of course there are also issues with the notion of value for zero-sum 2-person games, like the need to have mixed strategies which is problematic in various cases (and various others issues). Once you apply Von Neumann and Morgenstern utility theory on mixed outcomes you often loose the zero-sum property. But I agree that the notion of a value of zero-sum games is also very important.
Apr 9, 2014 at 3:55 history answered Joël CC BY-SA 3.0