Tietze extension theorem

theorem that continuous functions on a closed subset of a normal topological space can be extended to the entire space, preserving boundedness if necessary
Intangible theorem Q1346677
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Tietze extension theorem

Summary

Tietze extension theorem is a theorem[1]. It draws 103 Wikipedia views per month (theorem category, ranking #208 of 1,306).[2]

Key Facts

  • Tietze extension theorem's instance of is recorded as theorem[3].
  • Heinrich Franz Friedrich Tietze is named after Tietze extension theorem[4].
  • Tietze extension theorem's part of is recorded as list of theorems[5].
  • Tietze extension theorem's Freebase ID is recorded as /m/07qjn[6].
  • Tietze extension theorem's MathWorld ID is recorded as TietzesExtensionTheorem[7].
  • Tietze extension theorem's nLab ID is recorded as Tietze extension theorem[8].
  • Tietze extension theorem's maintained by WikiProject is recorded as WikiProject Mathematics[9].
  • Tietze extension theorem's Microsoft Academic ID is recorded as 22905006[10].
  • Tietze extension theorem's ProofWiki ID is recorded as Tietze_Extension_Theorem[11].
  • Tietze extension theorem's PlanetMath ID is recorded as TietzeExtensionTheorem[12].
  • Tietze extension theorem's Great Russian Encyclopedia portal ID is recorded as teorema-tittse-urysona-e25bcb[13].

Why It Matters

Tietze extension theorem draws 103 Wikipedia views per month (theorem category, ranking #208 of 1,306).[2] It has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[14] It is known by 11 alternative names across languages and contexts.[15]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . Freebase Data Dumps. wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [14] . Wikidata sitelinks. wikidata.org.
  3. [15] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Tietze extension theorem. Retrieved May 3, 2026, from https://4ort.xyz/entity/tietze-extension-theorem
MLA “Tietze extension theorem.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/tietze-extension-theorem.
BibTeX @misc{4ortxyz_tietze-extension-theorem_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Tietze extension theorem}}, year = {2026}, url = {https://4ort.xyz/entity/tietze-extension-theorem}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Tietze extension theorem — https://4ort.xyz/entity/tietze-extension-theorem (retrieved 2026-05-03)

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