Partial Group Symmetry in Figures I: Semidirect Products and the Six Coins

Fuente: arXiv
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Main Author: Hayashi, Takahiro
Format: Preprint
Published: 2025
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author Hayashi, Takahiro
author_facet Hayashi, Takahiro
contents In this paper, we construct a partial group \(\mathcal{P}(F)\) that represents the "partial symmetry" inherent in a subset \(F\) of \(d\)-dimensional Euclidean space. In cases where \(F\) is not connected, \(\mathcal{P}(F)\) captures more detailed information than the conventional symmetry group \(G(F)\). To establish a stronger connection between \(\mathcal{P}(F)\) and \(F\), we introduce a novel definition of partial group action. Furthermore, to characterize \(\mathcal{P}(F)\) in specific cases, we define partial group actions on other partial groups and present a construction of the corresponding semidirect product.
format Preprint
id arxiv_https___arxiv_org_abs_2506_14304
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Partial Group Symmetry in Figures I: Semidirect Products and the Six Coins
Hayashi, Takahiro
Group Theory
Quantum Algebra
18N50, 51M20, 08A99
In this paper, we construct a partial group \(\mathcal{P}(F)\) that represents the "partial symmetry" inherent in a subset \(F\) of \(d\)-dimensional Euclidean space. In cases where \(F\) is not connected, \(\mathcal{P}(F)\) captures more detailed information than the conventional symmetry group \(G(F)\). To establish a stronger connection between \(\mathcal{P}(F)\) and \(F\), we introduce a novel definition of partial group action. Furthermore, to characterize \(\mathcal{P}(F)\) in specific cases, we define partial group actions on other partial groups and present a construction of the corresponding semidirect product.
title Partial Group Symmetry in Figures I: Semidirect Products and the Six Coins
topic Group Theory
Quantum Algebra
18N50, 51M20, 08A99
url https://arxiv.org/abs/2506.14304