中文

$\mathbb{R}^{\omega_1}$中$\mathbb{N}$的闭拷贝

一般拓扑 2026-01-13 v3 逻辑

摘要

我们研究了R\mathbb{R}的幂空间中关于CC^*-嵌入与CC-嵌入的N\mathbb{N}的闭拷贝。我们证明Rω1\mathbb{R}^{\omega_1}含有非CC^*-嵌入的N\mathbb{N}的闭拷贝。

关键词

引用

@article{arxiv.2307.07223,
  title  = {Closed copies of $\mathbb{N}$ in $\mathbb{R}^{\omega_1}$},
  author = {Alan Dow and Klaas Pieter Hart and Jan van Mill and Hans Vermeer},
  journal= {arXiv preprint arXiv:2307.07223},
  year   = {2026}
}

备注

Version 2: some corrections and reformulations Version 3: references to older results plus an example of a nonC*-embedded copy consistent with not-CH