中文

2-轨道群中心扩张的有限性刚性性质

群论 2026-02-25 v2

摘要

我们将Wilkes关于SFS的有限性刚性结果推广到具有高秩中心(higher-rank centre)的2-轨道群中心扩张的情形。我们证明了在此情形下既出现刚性现象也出现非刚性现象,并且非刚性现象是暂态的,其意义在于:若G^1G^2\widehat{G}_1 \cong \widehat{G}_2,则G1×ZG2×ZG_1 \times \mathbb{Z} \cong G_2 \times \mathbb{Z}

关键词

引用

@article{arxiv.2304.01105,
  title  = {Profinite rigidity properties of central extensions of 2-orbifold groups},
  author = {Paweł Piwek},
  journal= {arXiv preprint arXiv:2304.01105},
  year   = {2026}
}

备注

45 pages. Removed the unnecessary assumption of at least 2 cone points. Comments welcome!