Deprecated: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 135] in /var/www/html/w/includes/Debug/MWDebug.php on line 372
On the Cantor and Hilbert cube frames and the Alexandroff-Hausdorff theorem - MaRDI portal

On the Cantor and Hilbert cube frames and the Alexandroff-Hausdorff theorem (Q2065608)

From MaRDI portal





scientific article; zbMATH DE number 7455897
Language Label Description Also known as
English
On the Cantor and Hilbert cube frames and the Alexandroff-Hausdorff theorem
scientific article; zbMATH DE number 7455897

    Statements

    On the Cantor and Hilbert cube frames and the Alexandroff-Hausdorff theorem (English)
    0 references
    0 references
    0 references
    12 January 2022
    0 references
    This paper is a description of the Cantor space in pointfree topology. It presents the frame \(\mathcal{L}(\mathbb{Z}_p)\) of \(p\)-adic integers by generators and relations. The spatialization of \(\mathcal{L}(\mathbb{Z}_p)\) is homeomorphic to the ultrametric space of \(p\)-adic integers \(\mathbb{Z}_p=\{x\in\mathbb{Q}_p\colon |x|_p\le 1\}\), thus homeomorphic to the Cantor space. It is shown that \(\mathcal{L}(\mathbb{Z}_p)\) is zero-dimensional, compact, metrizable, ultraparacompact, and ultranormal and that any compact metrizable locale is a localic image of \(\mathcal{L}(\mathbb{Z}_2)\).
    0 references
    0 references
    frames
    0 references
    locales
    0 references
    \(p\)-adic numbers
    0 references
    \(p\)-adic integers
    0 references
    Cantor set
    0 references
    point-free topology
    0 references

    Identifiers

    0 references
    0 references
    0 references
    0 references
    0 references
    0 references