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arXiv 1507.04665math.CO
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Wythoff对策变式的Sprague-Grundy函数的不变性

Invariance of the Sprague-Grundy Function for Variants of Wythoff's Game

Madeleine Weinstein

摘要:

我们证明了Fraenkel和Ho关于Wythoff博弈的两类变体的三个定理。Wythoff博弈的两类变体的特征是对角移动的限制。每一个猜想指出,斯普拉格-格伦迪函数是不变的,直到某个尼姆值的一个子集,这类变体的威索夫的游戏。对于一类Wythoff的游戏的变体,我们证明了Sprague-Grundy函数的不变性超出了Fraenkel和Ho所描述的。

英文摘要:

We prove three conjectures of Fraenkel and Ho regarding two classes of variants of Wythoff's game. The two classes of variants of Wythoff's game feature restrictions of the diagonal moves. Each conjecture states that the Sprague-Grundy function is invariant up to a certain nim-value for a subset of that class of variant of Wythoff's game. For one class of variants of Wythoff's game, we prove that the invariance of the Sprague-Grundy function extends beyond what was conjectured by Fraenkel and Ho.

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