群胚的覆盖态射、导出模与一维相对Hurewicz定理
代数拓扑
2017-03-21 v4
摘要
我们填补了文献中的一个空白，给出了1维版本的相对Hurewicz定理，并将其与群胚的阿贝尔化、覆盖空间和群胚的覆盖态射以及Crowell的导出模概念联系起来。
引用
@article{arxiv.1012.2824,
title = {Covering morphisms of groupoids, derived modules and a 1-dimensional Relative Hurewicz Theorem},
author = {Ronald Brown},
journal= {arXiv preprint arXiv:1012.2824},
year = {2017}
}
备注
15 pages, xypic v2 typo corrected on p.5 re composition v3 Change of title, and one sentence repetition eliminated. v3 Diagram (11) has been corrected with the two rows interchanged