Editing Zero-sum game (section)

== Extensions ==

In 1944, [[John von Neumann]] and [[Oskar Morgenstern]] proved that any non-zero-sum game for ''n'' players is equivalent to a zero-sum game with ''n''&nbsp;+&nbsp;1 players; the (''n''&nbsp;+&nbsp;1)th player representing the global profit or loss.<ref>{{cite book|url=https://press.princeton.edu/titles/7802.html |title=Theory of Games and Economic Behavior |publisher=Princeton University Press (1953) |date=June 25, 2005|access-date=2018-02-25|isbn=9780691130613 }}</ref>