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arXiv 1003.5839q-bio.PE
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多元宇宙中的进化博弈

Evolutionary games in the multiverse

Chaitanya S. Gokhale, Arne Traulsen

摘要:

两个局中人采用两种策略的演化博弈动力学已经得到了详细的研究。这些游戏已被用于模拟许多生物相关的场景,从哺乳动物的社会困境到微生物多样性。事实上,这些游戏中的一些可能发生在许多人之间,而不仅仅是两个人之间。在这里,我们解决多个玩家的一次性游戏。只要我们只有两个策略,两个参与人博弈的许多结果都可以推广到多个参与人。对于多个玩家和两个以上的策略的游戏,我们表明,成对相互作用的语句不再成立。对于具有任意数量策略的两人博弈,最多只能有一个孤立的内部均衡。对于任意数量的参与人$\boldsymbol{d}$和任意数量的策略n,最多可以有(d-1)^(n-1)个孤立的内部均衡。多人游戏表现出很大的动态复杂性,无法根据成对的相互作用来捕获。我们的结果适用于任何游戏,可以很容易地应用于特定的情况下,例如,公共产品游戏或多人猎鹿。

英文摘要:

Evolutionary game dynamics of two players with two strategies has been studied in great detail. These games have been used to model many biologically relevant scenarios, ranging from social dilemmas in mammals to microbial diversity. Some of these games may in fact take place between a number of individuals and not just between two. Here, we address one-shot games with multiple players. As long as we have only two strategies, many results from two player games can be generalized to multiple players. For games with multiple players and more than two strategies, we show that statements derived for pairwise interactions do no longer hold. For two player games with any number of strategies there can be at most one isolated internal equilibrium. For any number of players $\boldsymbol{d}$ with any number of strategies n, there can be at most (d-1)^(n-1) isolated internal equilibria. Multiplayer games show a great dynamical complexity that cannot be captured based on pairwise interactions. Our results hold for any game and can easily be applied for specific cases, e.g. public goods games or multiplayer stag hunts.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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