Affine Normal Play

Fuente: arXiv
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Autori principali: Larsson, Urban, Nowakowski, Richard J., Santos, Carlos P.
Natura: Preprint
Pubblicazione: 2024
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author Larsson, Urban
Nowakowski, Richard J.
Santos, Carlos P.
author_facet Larsson, Urban
Nowakowski, Richard J.
Santos, Carlos P.
contents There are many combinatorial games in which a move can terminate the game, such as a checkmate in chess. These moves give rise to diverse situations that fall outside the scope of the classical normal play structure. To analyze these games, an algebraic extension is necessary, including infinities as elements. In this work, affine normal play, the algebraic structure resulting from that extension, is analyzed. We prove that it is possible to compare two affine games using only their forms. Furthermore, affine games can still be reduced, although the reduced forms are not unique. We establish that the classical normal play is order-embedded in the extended structure, constituting its substructure of invertible elements. Additionally, as in classical theory, affine games born by day n form a lattice with respect to the partial order of games.
format Preprint
id arxiv_https___arxiv_org_abs_2402_05732
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Affine Normal Play
Larsson, Urban
Nowakowski, Richard J.
Santos, Carlos P.
Combinatorics
91A46
There are many combinatorial games in which a move can terminate the game, such as a checkmate in chess. These moves give rise to diverse situations that fall outside the scope of the classical normal play structure. To analyze these games, an algebraic extension is necessary, including infinities as elements. In this work, affine normal play, the algebraic structure resulting from that extension, is analyzed. We prove that it is possible to compare two affine games using only their forms. Furthermore, affine games can still be reduced, although the reduced forms are not unique. We establish that the classical normal play is order-embedded in the extended structure, constituting its substructure of invertible elements. Additionally, as in classical theory, affine games born by day n form a lattice with respect to the partial order of games.
title Affine Normal Play
topic Combinatorics
91A46
url https://arxiv.org/abs/2402.05732