外空间边界化的一个简单构造
群论
2018-04-04 v2
摘要
我们给出外空间的一个等变形变收缩的简单构造，该收缩同胚于 Bestvina-Feighn 边界化。这给出了边界化在无穷远处是 (2n-5)-连通的远为简单的证明，并进而表明 是一个虚对偶群。
引用
@article{arxiv.1709.01296,
title = {On the bordification of outer space},
author = {Kai-Uwe Bux and Peter Smillie and Karen Vogtmann},
journal= {arXiv preprint arXiv:1709.01296},
year = {2018}
}
备注
Accepted version, to appear in the Journal of the London MS. Section 7, giving the homeomorphism to the Bestvina-Feighn bordification, has been substantially revised