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Main Authors: Abuku, Tomoaki, Kimura, Shun-ichi, Kiya, Hironori, Larsson, Urban, Saha, Indrajit, Suetsugu, Koki, Yamashita, Takahiro
Format: Preprint
Published: 2023
Subjects:
Online Access:https://arxiv.org/abs/2311.01006
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author Abuku, Tomoaki
Kimura, Shun-ichi
Kiya, Hironori
Larsson, Urban
Saha, Indrajit
Suetsugu, Koki
Yamashita, Takahiro
author_facet Abuku, Tomoaki
Kimura, Shun-ichi
Kiya, Hironori
Larsson, Urban
Saha, Indrajit
Suetsugu, Koki
Yamashita, Takahiro
contents We consider an {\em enforce operator} on impartial rulesets similar to the Muller Twist and the comply/constrain operator of Smith and St\u anic\u a, 2002. Applied to the rulesets A and B, on each turn the opponent enforces one of the rulesets and the current player complies, by playing a move in that ruleset. If the outcome table of the enforce variation of A and B is the same as the outcome table of A, then we say that A dominates B. We find necessary and sufficient conditions for this relation. Additionally, we define a {\em selective operator} and explore a distributive-lattice-like structure within applicable rulesets. Lastly, we define nim-values under enforce-rulesets, and establish that the Sprague-Grundy theory continues to hold, along with illustrative examples.
format Preprint
id arxiv_https___arxiv_org_abs_2311_01006
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Enforce and selective operators of combinatorial games
Abuku, Tomoaki
Kimura, Shun-ichi
Kiya, Hironori
Larsson, Urban
Saha, Indrajit
Suetsugu, Koki
Yamashita, Takahiro
Combinatorics
We consider an {\em enforce operator} on impartial rulesets similar to the Muller Twist and the comply/constrain operator of Smith and St\u anic\u a, 2002. Applied to the rulesets A and B, on each turn the opponent enforces one of the rulesets and the current player complies, by playing a move in that ruleset. If the outcome table of the enforce variation of A and B is the same as the outcome table of A, then we say that A dominates B. We find necessary and sufficient conditions for this relation. Additionally, we define a {\em selective operator} and explore a distributive-lattice-like structure within applicable rulesets. Lastly, we define nim-values under enforce-rulesets, and establish that the Sprague-Grundy theory continues to hold, along with illustrative examples.
title Enforce and selective operators of combinatorial games
topic Combinatorics
url https://arxiv.org/abs/2311.01006