cardioid

type of curve
Thing general Q207726
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cardioid

Summary

cardioid ranks in the top 2% of general entities by monthly Wikipedia readership (260 views/month).[1]

Key Facts

  • cardioid's video is recorded as Cardiod animation.gif[2].
  • heart is named after cardioid[3].
  • cardioid's Library of Congress authority ID is recorded as sh85020208[4].
  • cardioid's subclass of is recorded as sinusoidal spiral[5].
  • cardioid's subclass of is recorded as epicycloid[6].
  • cardioid's subclass of is recorded as limaçon[7].
  • cardioid's has use is recorded as transition curve[8].
  • cardioid's Commons category is recorded as Cardioids[9].
  • cardioid's BNCF Thesaurus ID is recorded as 31689[10].
  • cardioid's Freebase ID is recorded as /m/02zsgb[11].
  • cardioid's described by source is recorded as Armenian Soviet Encyclopedia[12].
  • cardioid's described by source is recorded as Otto's encyclopedia[13].
  • cardioid's described by source is recorded as Meyers Konversations-Lexikon, 4th edition (1885–1890)[14].
  • cardioid's described by source is recorded as Encyclopædia Britannica 11th edition[15].
  • cardioid's described by source is recorded as New International Encyclopedia[16].
  • cardioid's defining formula is recorded as r=a(1-\cos\varphi)[17].
  • cardioid's defining formula is recorded as (x^2 + y^2 + 2 a x)^2 - 4 a^2 (x^2 + y^2) \, = \, 0[18].
  • cardioid's MathWorld ID is recorded as Cardioid[19].
  • cardioid's JSTOR topic ID is recorded as cardioids[20].
  • cardioid's Great Norwegian Encyclopedia ID is recorded as kardioide[21].
  • cardioid's Elhuyar ZTH ID is recorded as 133564[22].
  • cardioid's Larousse ID is recorded as divers/cardioïde/30869[23].
  • cardioid's maintained by WikiProject is recorded as WikiProject Mathematics[24].
  • cardioid's Microsoft Academic ID is recorded as 179842742[25].
  • cardioid's ProofWiki ID is recorded as Definition:Cardioid[26].

Why It Matters

cardioid ranks in the top 2% of general entities by monthly Wikipedia readership (260 views/month).[1] cardioid has Wikipedia articles in 23 language editions, a strong signal of global cultural recognition.[27] cardioid is known by 11 alternative names across languages and contexts.[28]

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] . Nuovo soggettario. Retrieved . thes.bncf.firenze.sbn.it. Provenance: wikidata.org.
  4. [5] . wikidata.org.
  5. [6] . wikidata.org.
  6. [7] . wikidata.org.
  7. [8] . wikidata.org.
  8. [9] . wikidata.org.
  9. [10] . Nuovo soggettario. wikidata.org.
  10. [11] . Freebase Data Dumps. wikidata.org.
  11. [12] . wikidata.org.
  12. [13] . wikidata.org.
  13. [14] . wikidata.org.
  14. [15] . wikidata.org.
  15. [16] . wikidata.org.
  16. [17] . wikidata.org.
  17. [18] . wikidata.org.
  18. [19] . wikidata.org.
  19. [20] . wikidata.org.
  20. [21] . wikidata.org.
  21. [22] . wikidata.org.
  22. [23] . wikidata.org.
  23. [24] . wikidata.org.
  24. [25] . wikidata.org.
  25. [26] . wikidata.org.

Aggregate / graph-position facts

  1. [1] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [27] . Wikidata sitelinks. wikidata.org.
  3. [28] . 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). cardioid. Retrieved April 11, 2026, from https://4ort.xyz/entity/cardioid
MLA “cardioid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Apr. 2026, https://4ort.xyz/entity/cardioid.
BibTeX @misc{4ortxyz_cardioid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{cardioid}}, year = {2026}, url = {https://4ort.xyz/entity/cardioid}, note = {Accessed: 2026-04-11}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): cardioid — https://4ort.xyz/entity/cardioid (retrieved 2026-04-11)

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