I want to know the answer to the following question:
Who was co-author with von Neman on the Theory of Games and Economic Behavior?
All the background I'm provided with is that "Von Neumann improved and extended the minimax theorem to include games involving imperfect information and games with more than two players, publishing this result in his 1944 Theory of Games and Economic Behavior (written with Oskar Morgenstern).". Is that enough to answer the question?