论自由群中闭子集的乘积
群论
2019-06-19 v1
摘要
我们给出自由群中闭子集的例子，使得它们的乘积在 profinite topology（pro-有限拓扑）中不闭。我们讨论了如何刻画自由群中这样一个子集：它在 pro-有限拓扑中闭，且它与自由群中任意有限生成子群的乘积在 pro-有限拓扑中也闭。
引用
@article{arxiv.1906.07275,
title = {On Products of Closed Subsets in Free Groups},
author = {Rita Gitik and Eliyahu Rips},
journal= {arXiv preprint arXiv:1906.07275},
year = {2019}
}
备注
arXiv admin note: text overlap with arXiv:1709.06542