Home › Entities › surreal number › infinitesimal

infinitesimal

nonzero positive ‘number’ smaller than any positive real number, formalizable in a number of ways (surreals, hyperreals etc.)
Class type of: surreal number, dual number, hyperreal number Q193885

Facts

6 properties

Identity

Instance of
mathematical term
More facts +5
Subclass of
surreal number, dual number, hyperreal number, superreal number[2][3][4][5]
Described by source
Brockhaus and Efron Encyclopedic Dictionary, Corriere della Sera Dizionario di Inglese[7][8]
Opposite of
infinity[6]
Topic has template
Template:Infinitesimals[9]
Used by
calculus[10]
🏷️ Also known as
en infinitesimal (mathematics) en infinitesimal ar موحل في الصغر ar متناهي الصغر ar عدد لامتناهي cs Infinitesimální cs Infinitezimální cs Infinitezimální hodnota el Απειροελάχιστο es infinitesimo es infinitésimo fa بی‌نهایت کوچک fi Äärettömän pieni luku fi Infinitesimaali fi Infinitesimaalinen fi Mielivaltaisen pieni positiivinen luku fr infiniment petit fr infinitésimal he אינפיניטיסימאלי he אינפיניטיסימל
🔖 Identifiers · 18
OpenAlex ID
C91229774
BBC Things ID
d21175e7-fd3d-4715-840e-46e7c21a6da9
Elhuyar ZTH ID
025705
Encyclopedia of Mathematics article ID
Infinitesimal_calculus
Encyclopædia Britannica Online ID
science/infinitesimal
Freebase ID
/m/0159jj
Interlingual Index ID
i67692
JSTOR topic ID (archived)
infinitesimals
Lex ID
infinitesimal
Microsoft Academic ID (discontinued)
91229774
NLab ID
infinitesimal number
Namuwiki ID
무한소
Show all 18 identifiers +6
PlanetMath ID
Infinitesimal
ProofWiki ID
Definition:Infinitesimal
Stack Exchange tag
mathoverflow.net, math.stackexchange.com, matheducators.stackexchange.com
Treccani's Enciclopedia della Matematica ID
infinitesimo
WordNet 3.1 Synset ID
05872631-n
Yale LUX ID
concept/6f9aba2c-d6b2-44ab-a92a-81dd32ea5cd0

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

🔗 Connections
Subclass of 4
surreal number, hyperreal number, dual number, superreal number
← Main subject 2
The Method of Mechanical Theorems, The Analyst
Described by source 1
Brockhaus and Efron Encyclopedic Dictionary
Opposite of 1
infinity
Topic has template 1
Template:Infinitesimals
Used by 1
calculus
← Opposite of 1
infinity
← Template has topic 1
Template:Infinitesimals
← Uses 1
nonstandard analysis
Press Enter · cited answer in seconds

Summary

infinitesimal is a mathematical term[1].

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.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . 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). infinitesimal. Retrieved November 10, 2026, from https://4ort.xyz/entity/infinitesimal
MLA “infinitesimal.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Nov. 2026, https://4ort.xyz/entity/infinitesimal.
BibTeX @misc{4ortxyz_infinitesimal_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{infinitesimal}}, year = {2026}, url = {https://4ort.xyz/entity/infinitesimal}, note = {Accessed: 2026-11-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): infinitesimal — https://4ort.xyz/entity/infinitesimal (retrieved 2026-11-10)

Canonical URL: https://4ort.xyz/entity/infinitesimal · 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. 18d ago · AddyLockPool · 2026-10-26 view diff on Wikidata ↗
    Topic has template → Template:Infinitesimals
    Subclass of → surreal number, dual number, hyperreal number +1
    Used by → calculus
    Opposite of → infinity
    + 2 other properties edited (see Wikidata diff for full list)
    "Created claim: Described by source: Corriere della Sera Dizionario di Inglese, Add source/identifier (via Wikidata Source Saver, user-initiated)"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.