English

Weak Cayley table groups of some crystallographic groups

Group Theory 2016-03-14 v1

Abstract

For a group GG, a weak Cayley isomorphism is a bijection f:GGf:G \to G such that f(g1g2)f(g_1g_2) is conjugate to f(g1)f(g2) f(g_1)f(g_2) for all g1,g2Gg_1,g_2 \in G. They form a group W(G)\mathcal W(G) that is the group of symmetries of the weak Cayley table of GG. We determine W(G)\mathcal W(G) for each of the seventeen wallpaper groups GG, and for some other crystallographic groups.

Keywords

Cite

@article{arxiv.1603.03702,
  title  = {Weak Cayley table groups of some crystallographic groups},
  author = {Stephen P. Humphries and Rebeca A. Paulsen},
  journal= {arXiv preprint arXiv:1603.03702},
  year   = {2016}
}
R2 v1 2026-06-22T13:09:01.136Z