SHMARQL

Alexandroff extension

<http://www.wikidata.org/entity/Q864919>

given a space X, the space X ⊔ {∞}, topologized so that a set containing ∞ is open iff its complement is closed compact in X
rdfs:label
"Alexandroff extension"@en
skos:altLabel
"Aleksandrov compactification"@en
"Aleksandrov extension"@en
"Alexandroff compactification"@en
"one-point compactification"@en
schema:description
"given a space X, the space X ⊔ {∞}, topologized so that a set containing ∞ is open iff its complement is closed compact in X"@en
schema:dateModified "2026-07-23T21:17:19+00:00"^^xsd:dateTime
schema:version 2521830368
wikibase:identifiers 6
wikibase:sitelinks 14
wikibase:statements 10
p:P11514 wd:statement/Q864919-5581EEC3-D867-478C-B7E1-1538C28FD86B
p:P138 wd:statement/Q864919-c3cdea2b-4c0f-e669-c578-871db6c5a41e
p:P2579 wd:statement/Q864919-7fa501a0-439b-db13-3fbc-17ae6b2eb6c7
p:P2812 wd:statement/Q864919-a041112b-4e99-717f-51fe-9616aab64777
p:P31 wd:statement/Q864919-9a5dd912-456e-ef0a-3a44-5b69a92b3d3a
p:P4215 wd:statement/Q864919-AC2DE1AE-F3CB-452C-B3E7-B4839AF564D6
p:P6104 wd:statement/Q864919-F28B1F63-A75C-43E5-90D8-81E73EB95547
p:P6366 wd:statement/Q864919-248782FC-135A-4B21-8113-559D53A80700
p:P646 wd:statement/Q864919-26718D02-E477-405A-8550-8DA4076776CC
p:P7554 wd:statement/Q864919-E06DC17C-1A25-43EE-824E-EABD2030F854
p:direct-normalized/P6366 <https://makg.org/entity/98575774>
wdt:P11514 "kompaktifikatsiia-aleksandrova-1aaa4a"
wdt:P138 wd:Q325696
wdt:P2579 wd:Q621550
wdt:P2812 "One-PointCompactification"
wdt:P31 wd:Q546145
wdt:P4215 "one-point compactification"
wdt:P6104 wd:Q8487137
wdt:P6366 "98575774"
wdt:P646 "/m/03hfsrt"
wdt:P7554 "Aleksandrov_compactification"
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data from SPARQL profile: Wikidata