On the expansion of three-element subtraction sets
classification
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keywords
subtractionsetsgamesnim-sequencesadditionalaugmentedbipartitecases
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We study the periodicity of nim-sequences for subtraction games having subtraction sets with three elements. In particular, we give solutions in several cases, and we describe how these subtraction sets can be augmented by additional numbers without changing the nim-sequences. The paper concludes with a conjecture on ultimately bipartite subtraction games.
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