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surreal number

a totally ordered proper class containing the real numbers as well as hyperreal numbers such as infinity and infinitesimals.
Class type of: number Q875333

Facts

8 properties
Instance of
type of number
Subclass of
number
Described by source
On Numbers and Games[6]
Different from
surrealism[7]
Discoverer or inventor
John Horton Conway[3]
Has part(s)
hyperreal number[5]
Maintained by WikiProject
WikiProject Mathematics[8]
Named after
surrealism[4]
🏷️ Also known as
en surreal number ar عدد فوق حقيقي cs nadreálná čísla cs surreálné číslo cs surreálná čísla cs nadreálné číslo da surreelle tal de surreale Zahlen de surreale Zahl es numeros surreales es números surreales es numero surreal es número surreal fa اعداد سورئال fi surreaaliluku fr nombres surréels fr nombres pseudo-réels fr nombre surréel fr nombre surreel et pseudo-reel fr nombre Surréel Et Pseudo-Réel
🔖 Identifiers · 18
Library of Congress Authorities ID
sh87000053
GND ID
4439590-5
Image (Wikimedia Commons)
Surreal number tree.svg ↗
BNCF Thesaurus ID
60694
Bibliothèque nationale de France ID
12269146s
Dewey Decimal Classification
513.5
Encyclopedia of Mathematics article ID
Surreal_numbers
FAST ID
1139537
Freebase ID
/m/0dknv
IdRef ID
031485111
J9U entity ID
987007534216205171
JSTOR topic ID (archived)
surreal-numbers
Show all 18 identifiers +6
MathWorld ID
SurrealNumber
Microsoft Academic ID (discontinued)
93511161
PlanetMath ID
SurrealNumber, 116thesurrealnumbers
Quora topic ID
Surreal-Numbers
Stack Exchange tag
mathoverflow.net, math.stackexchange.com
Yale LUX ID
concept/568613b5-f810-4531-bd86-4cb623e1d60d

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Subtypes 2
infinitesimal, superreal number
Created notable works 1
John Horton Conway
Different from 1
surrealism
Discoverer or inventor 1
John Horton Conway
Has part(s) 1
hyperreal number
Maintained by WikiProject 1
WikiProject Mathematics
Named after 1
surrealism
Subclass of 1
number
← Different from 1
surrealism
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Summary

surreal number is a type of number[1]. It is a type of number[2].

Related Entities

John Horton Conway

References

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

Direct Wikidata claims

  1. [3] ↑ . mathshistory.st-andrews.ac.uk. Retrieved . mathshistory.st-andrews.ac.uk. Provenance: wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [2] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. 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). surreal number. Retrieved November 12, 2026, from https://4ort.xyz/entity/surreal-number
MLA “surreal number.” 4ort.xyz Knowledge Graph, 4ort.xyz, 12 Nov. 2026, https://4ort.xyz/entity/surreal-number.
BibTeX @misc{4ortxyz_surreal-number_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{surreal number}}, year = {2026}, url = {https://4ort.xyz/entity/surreal-number}, note = {Accessed: 2026-11-12}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): surreal number — https://4ort.xyz/entity/surreal-number (retrieved 2026-11-12)

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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. 24w ago · Twofivesixbot bot · 2026-05-26 view diff on Wikidata ↗
    Discoverer or inventor → John Horton Conway
    Has part(s) → hyperreal number
    Instance of → type of number
    Subclass of → number
    + 4 other properties edited (see Wikidata diff for full list)
    "Changed claim qualifiers: J9U entity ID: 987007534216205171, mv to monolingual text names on J9U statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.