Home › Entities › lemma › Lindelöf's lemma

Lindelöf's lemma

lemma that every open subset of the reals is a countable union of open intervals
Thing lemma Q6552215
Press Enter · cited answer in seconds

Lindelöf's lemma

Summary

Lindelöf's lemma is a lemma[1]. It draws 9 Wikipedia views per month (lemma category, ranking #36 of 67).[2]

Key Facts

  • Lindelöf's lemma's instance of is recorded as lemma[3].
  • Ernst Leonard Lindelöf is named after Lindelöf's lemma[4].
  • Lindelöf's lemma's Freebase ID is recorded as /m/0gdrck[5].
  • Lindelöf's lemma's maintained by WikiProject is recorded as WikiProject Mathematics[6].
  • Lindelöf's lemma's ProofWiki ID is recorded as Lindelöf's_Lemma[7].

Why It Matters

Lindelöf's lemma draws 9 Wikipedia views per month (lemma category, ranking #36 of 67).[2] It has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[8]

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] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [8] ↑ . Wikidata sitelinks. 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). Lindelöf's lemma. Retrieved May 3, 2026, from https://4ort.xyz/entity/lindel-f-s-lemma
MLA “Lindelöf's lemma.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/lindel-f-s-lemma.
BibTeX @misc{4ortxyz_lindel-f-s-lemma_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Lindelöf's lemma}}, year = {2026}, url = {https://4ort.xyz/entity/lindel-f-s-lemma}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Lindelöf's lemma — https://4ort.xyz/entity/lindel-f-s-lemma (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/lindel-f-s-lemma · Last refreshed: