Impartial Avoidance Games on Convex Geometries

Fuente: arXiv
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Main Author: Shim, Seomgeun
Format: Preprint
Published: 2025
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author Shim, Seomgeun
author_facet Shim, Seomgeun
contents We analyze a two-player game in which players take turns avoiding the selection of certain points within a convex geometry. The objective is to prevent the convex closure of all chosen points from encompassing a predefined set. The first player forced into a move that results in the inclusion of this set loses the game. We redevelop a theoretical framework for these avoidance games and determine their nim numbers, including cases involving vertex geometries of trees, edge geometries of trees, and scenarios where the predefined set consists of extreme points.
format Preprint
id arxiv_https___arxiv_org_abs_2512_06267
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Impartial Avoidance Games on Convex Geometries
Shim, Seomgeun
Combinatorics
91A46, 52A01
We analyze a two-player game in which players take turns avoiding the selection of certain points within a convex geometry. The objective is to prevent the convex closure of all chosen points from encompassing a predefined set. The first player forced into a move that results in the inclusion of this set loses the game. We redevelop a theoretical framework for these avoidance games and determine their nim numbers, including cases involving vertex geometries of trees, edge geometries of trees, and scenarios where the predefined set consists of extreme points.
title Impartial Avoidance Games on Convex Geometries
topic Combinatorics
91A46, 52A01
url https://arxiv.org/abs/2512.06267