The lottery contest is a best-response potential game
证明了n人彩票竞赛存在最佳反应势，即使竞赛技术允许平局也成立，并由此推出存在非平凡的两方零和博弈与收益函数相同的博弈最佳反应等价。
It is shown that the n-player lottery contest admits a best-response potential (Voorneveld, 2000). This is true also when the contest technology reflects the possibility of a draw. The result implies, in particular, the existence of a non-trivial two-player zero-sum game that is best-response equivalent to a game with identical payoff functions.