arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1509.09253math.GTmath.GR
收藏

图的有限覆盖中的移动同调类

Moving homology classes in finite covers of graphs

Benson Farb, Sebastian Hensel

摘要:

设$Y\to X$是$n\geq 3$圆楔的有限法覆盖.证明了对任意$v\neq 0\in H_1(Y;\mathbb{Q})$,存在同伦等价$F:X\to X$的$\widetilde{F}$到$Y$的提升,使得迭代集$\{\widetilde{F}^d(v): d\in \mathbb{Z}\}\subseteq H_1(Y;\mathbb{Q})$是无限的.本文的主要成就是使用表示论来证明似乎无法通过拓扑来访问的纯拓扑对象的存在。

英文摘要:

Let $Y\to X$ be a finite normal cover of a wedge of $n\geq 3$ circles. We prove that for any $v\neq 0\in H_1(Y;\mathbb{Q})$ there exists a lift $\widetilde{F}$ to $Y$ of a homotopy equivalence $F:X\to X$ so that the set of iterates $\{\widetilde{F}^d(v): d\in \mathbb{Z}\}\subseteq H_1(Y;\mathbb{Q})$ is infinite. The main achievement of this paper is the use of representation theory to prove the existence of a purely topological object that seems to be inaccessible via topology.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑