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Paper detail

A Note on Numbers

When are all positions of a game numbers? We show that two properties are necessary and sufficient. These properties are consequences of that, in a number, it is not an advantage to be the first player. One of these properties implies the other. However, checking for one or the other, rather than just one, can often be accomplished by only looking at the positions on the `board'. If the stronger property holds for all positions, then the values are integers.

preprint2021arXivOpen access
Alda CarvalhoMelissa A. HugganRichard J. NowakowskiCarlos Pereira dos Santos
math.CO
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Alda CarvalhoMelissa A. HugganRichard J. NowakowskiCarlos Pereira dos Santos

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