English

Cyclic extensions of Moufang loops induced by semi-automorphisms

Group Theory 2013-06-27 v1

Abstract

It is well known that if a group G factorizes as G = NH where H\leq G and N is normal in G then the group structure of G is determined by the subgroups H and N, the intersection of N with H and how H acts on N with a homomorphism f : H -> Aut(N). Here we generalize the idea by creating extensions using the semi-automorphism group of N. We show that if G=NH is a Moufang loop, N is a normal subloop, and H=<u> is a finite cyclic group of order coprime to three then the binary operation of G depends only on the binary operation of N, the intersection of N with H, and how u permutes the elements of N as a semi-automorphism of N.

Keywords

Cite

@article{arxiv.1306.6261,
  title  = {Cyclic extensions of Moufang loops induced by semi-automorphisms},
  author = {Stephen M. Gagola},
  journal= {arXiv preprint arXiv:1306.6261},
  year   = {2013}
}

Comments

Keywords: Group extension, Semidirect product, Semi-automorphism, Moufang loop