English

Representation Theory of $\mathbb{Z}_2^{*n}$

Representation Theory 2018-02-08 v1 Algebraic Geometry Group Theory

Abstract

We study the representations of the group Z2n\mathbb{Z}_2^{*n}, the free product of Z2\mathbb{Z}_2 with itself nn-times. We use the action of Bn=S2SnB_n = S_2 \wr S_n as algebra automorphisms on the group algebra C(Z2n)\mathbb{C}(\mathbb{Z}_2^{*n}) to find the components that contain simple representations and to study smoothness of their GIT-quotients. In particular, all the possible local quiver settings are studied for the component containing the standard nn-dimensional representation of Sn+1S_{n+1}.

Keywords

Cite

@article{arxiv.1802.02449,
  title  = {Representation Theory of $\mathbb{Z}_2^{*n}$},
  author = {Kevin De Laet},
  journal= {arXiv preprint arXiv:1802.02449},
  year   = {2018}
}

Comments

31 pages, 6 figures. Comments welcome

R2 v1 2026-06-23T00:14:35.298Z