What is the concept of zero-sum game?

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What is the concept of zero-sum game?

The concept of a zero-sum game in game theory refers to a situation where the total gains and losses of all participants in the game add up to zero. In other words, the benefits obtained by one player are exactly offset by the losses of the other players. In a zero-sum game, the total utility or payoff remains constant, and any gain for one player is necessarily at the expense of the others.