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11 changes: 11 additions & 0 deletions spaces/S000174/properties/P000023.md

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This is not trivial enough to just assert this as facts. One needs an elaboration. Clearly sets of the form $\{\omega\}^n\times (\omega+1)^\omega$ form a clopen base for this point, so it's enough to show that they're not compact. And this follows because it has topology larger than that of the product topology if $\omega+1$ were given discrete topology, which is not compact.

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---
space: S000174
property: P000023
value: false
---

At the point $p=(\omega, \omega, \dots)$, the clopen sets
$\{\omega\}^n \times (\omega+1)^\omega$ form a neighborhood base. Each of
these sets has a topology finer than the product topology on
$\{\omega\}^n \times (\omega+1)^\omega$ when $\omega+1$ is discrete. The
latter space is not compact, so none of these neighborhoods is compact.
7 changes: 7 additions & 0 deletions spaces/S000174/properties/P000051.md
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---
space: S000174
property: P000051
value: false
---

The subspace $2 ^ \omega \setminus \{(0,0,\dots)\} \subseteq X$ is homeomorphic to Cantor set without a point, and so has no isolated points.
10 changes: 10 additions & 0 deletions spaces/S000174/properties/P000062.md
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---
space: S000174
property: P000062
value: false
---

The collection $\{\xi^\omega : \xi < \omega_1\}$ is an open cover of $X$.
Every countable subcollection has union contained in $\xi^\omega$ for some
$\xi < \omega_1$, and $\xi^\omega$ is a proper closed subset of $X$. Thus,
no countable subcollection has dense union.
9 changes: 9 additions & 0 deletions spaces/S000174/properties/P000065.md
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---
space: S000174
property: P000065
value: true
---


\[\mathfrak c = |2^\omega| \leq |\omega_1^\omega|
\leq |(2^\omega)^\omega| = \mathfrak c\]
16 changes: 16 additions & 0 deletions spaces/S000174/properties/P000083.md
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---
space: S000174
property: P000083
value: false
refs:
- doi: 10.4064/FM-97-2-53-55
name: "A perfectly normal locally metrizable non-paracompact space"
- zb: "0593.28016"
name: Borel measures (Gardner and Pfeffer)
---

Proposition 2 of {{doi:10.4064/FM-97-2-53-55}} constructs a locally countable
subspace of $X$ which is not $\sigma$-discrete. By Theorem 13.3 of
{{zb:0593.28016}}, every locally countable subspace of
a weakly $\delta\theta$-refinable space is $\sigma$-discrete. Hence $X$ is not
weakly $\delta\theta$-refinable and, in particular, is not meta-Lindelöf.
7 changes: 7 additions & 0 deletions spaces/S000174/properties/P000093.md
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---
space: S000174
property: P000093
value: false
---

The point $(\omega, \omega,\dots) \in X$ has no countable neighborhood.
7 changes: 7 additions & 0 deletions spaces/S000174/properties/P000139.md
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---
space: S000174
property: P000139
value: true
---

The point $p := (0, 0, \dots) \in X$ is isolated since $\{p\} = 1^\omega$ where $1 = \{0\}$.
7 changes: 0 additions & 7 deletions spaces/S000174/properties/P000163.md

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16 changes: 16 additions & 0 deletions spaces/S000174/properties/P000194.md
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---
space: S000174
property: P000194
value: false
refs:
- doi: 10.4064/FM-97-2-53-55
name: "A perfectly normal locally metrizable non-paracompact space"
- zb: "0593.28016"
name: Borel measures (Gardner and Pfeffer)
---

Proposition 2 of {{doi:10.4064/FM-97-2-53-55}} constructs a locally countable
subspace of $X$ which is not $\sigma$-discrete. By Theorem 13.3 of
{{zb:0593.28016}}, every locally countable subspace of
a weakly $\delta\theta$-refinable space is $\sigma$-discrete. Hence $X$ is not
weakly $\delta\theta$-refinable and, in particular, is not submetacompact.
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