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closed interval

(possibly infinite) interval that includes all of its limit points
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closed interval

Summary

closed interval has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[1]

Key Facts

  • closed interval is a type of closed set[2].
  • closed interval is a type of bounded interval[3].
  • closed interval's described by source is recorded as ISO 80000-2:2019 Quantities and units — Part 2: Mathematics[4].
  • closed interval's has characteristic is recorded as closedness[5].
  • closed interval's has characteristic is recorded as boundedness[6].
  • closed interval's studied by is recorded as order theory[7].
  • closed interval's maintained by WikiProject is recorded as WikiProject Mathematics[8].

Body

Definition and Type

Recorded subclass of include closed set[2] and bounded interval[3].

Why It Matters

closed interval has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[1] It is known by 17 alternative names across languages and contexts.[9]

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikidata sitelinks. wikidata.org.
  2. [9] ↑ . 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). closed interval. Retrieved April 10, 2026, from https://4ort.xyz/entity/closed-interval
MLA “closed interval.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/closed-interval.
BibTeX @misc{4ortxyz_closed-interval_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{closed interval}}, year = {2026}, url = {https://4ort.xyz/entity/closed-interval}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): closed interval — https://4ort.xyz/entity/closed-interval (retrieved 2026-04-10)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 3d ago · Warudo · 2026-07-02 view diff on Wikidata ↗
    Defining formula → [a, b] = \{x \in \mathbb{R} \mid a \leq x \leq b\}, [a,b]=\{x\in X\colon a\lesssim x\lesssim b\}
    Aliases → —
    Subclass of → —
    Described by source → ISO 80000-2:2019 Quantities and units — Part 2: Mathematics
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1 */ [[Property:P2534]]: [a,b]=\{x\in X\colon a\precsim x\precsim b\}"
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