Semi-magic dihedral squares
Combinatorics
2026-02-26 v2
Abstract
Let be a group of order and be an array whose entries are all distinct elements of . If there exists an element such that for every row , there exists an ordering of elements such that and for every column there exists an ordering of elements such that then is called a \emph{-semi-magic square of side } and is called a \emph{magic constant}. We provide a complete characterization of semi-magic squares of side whose entries belong to a dihedral group . Moreover, we show that in our constructions a single semi-magic square may admit two distinct magic constants, depending on the order in which the products are computed.
Cite
@article{arxiv.2602.20774,
title = {Semi-magic dihedral squares},
author = {Sylwia Cichacz and Dalibor Froncek},
journal= {arXiv preprint arXiv:2602.20774},
year = {2026}
}