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extended real number line

extension of the reals by +∞ and −∞
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extended real number line

Summary

extended real number line is a set of numbers[1]. It has Wikipedia articles in 17 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • extended real number line's instance of is recorded as set of numbers[3].
  • extended real number line's instance of is recorded as compact space[4].
  • extended real number line's different from is recorded as projectively extended real line[5].
  • extended real number line's set cardinality is recorded as cardinality of the continuum[6].
  • extended real number line's maintained by WikiProject is recorded as WikiProject Mathematics[7].

Body

Definition and Type

Recorded instance of include set of numbers[3] and compact space[4].

Why It Matters

extended real number line has Wikipedia articles in 17 language editions, a strong signal of global cultural recognition.[2] It is known by 16 alternative names across languages and contexts.[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] ↑ . Wikidata sitelinks. wikidata.org.
  2. [8] ↑ . 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). extended real number line. Retrieved May 3, 2026, from https://4ort.xyz/entity/extended-real-number-line
MLA “extended real number line.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/extended-real-number-line.
BibTeX @misc{4ortxyz_extended-real-number-line_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{extended real number line}}, year = {2026}, url = {https://4ort.xyz/entity/extended-real-number-line}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): extended real number line — https://4ort.xyz/entity/extended-real-number-line (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/extended-real-number-line · Last refreshed:

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. 21d ago · Mynus grey · 2026-07-02 view diff on Wikidata ↗
    Aliases → —
    Different from → projectively extended real line
    Instance of → set of numbers, compact space
    Set cardinality → cardinality of the continuum
    + 3 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P14534]]: EReal, #quickstatements; #temporary_batch_1783013068346"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.