论文标题
使空间野外（简单地连接的情况）
Making spaces wild (simply-connected case)
论文作者
论文摘要
我们将圆的副本附加到可分离的度量空间的可数密度子集$ d $ $ x $和 构建耳环空间$ e（x，d）$。我们表明，如果Space $ X $简单地连接并且本地与之相关，则$ E（x，d）$的基本组对夏威夷耳环组的子组是同构的。此外，如果$ x $是本地路径连接的，则可以从$ e（x，d）$的基本组中回收空间$ x $。
We attach copies of the circle to points of a countable dense subset $D$ of a separable metric space $X$ and construct an earring space $E(X,D)$. We show that the fundamental group of $E(X,D)$ is isomorphic to a subgroup of the Hawaiian earring group, if the space $X$ is simply-connected and locally simply-connected. In addition if the space $X$ is locally path-connected, the space $X$ can be recovered from the fundamental group of $E(X,D)$.
