English

Palindromic Width of Wreath Products

Group Theory 2014-02-19 v1

Abstract

We show that the wreath product GZnG \wr \mathbb{Z}^n of any finitely generated group GG with Zn\mathbb{Z}^n has finite palindromic width. We also show that CAC \wr A has finite palindromic width if CC has finite commutator width and AA is a finitely generated infinite abelian group. Further we prove that if HH is a non-abelian group with finite palindromic width and GG any finitely generated group, then every element of the subgroup GHG' \wr H can be expressed as a product of uniformly boundedly many palindromes. From this we obtain that PHP \wr H has finite palindromic width if PP is a perfect group and further that GFG \wr F has finite palindromic width for any finite, non-abelian group FF.

Keywords

Cite

@article{arxiv.1402.4345,
  title  = {Palindromic Width of Wreath Products},
  author = {Elisabeth Fink},
  journal= {arXiv preprint arXiv:1402.4345},
  year   = {2014}
}

Comments

10 pages, 1 figure