Cotton tensor

rank-3 tensor defined for a 3d (pseudo-)Riemannian manifold which measures the degree to which it fails to be conformally flat
Thing general Q3518152
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Cotton tensor

Summary

Cotton tensor ranks in the top 2% of general entities by monthly Wikipedia readership (27 views/month).[1]

Key Facts

  • Émile Cotton is named after Cotton tensor[2].
  • Cotton tensor's subclass of is recorded as tensor field[3].
  • Cotton tensor's Freebase ID is recorded as /m/043nws[4].
  • Cotton tensor's defining formula is recorded as C_{ijk}=\nabla_kR_{ij}-\nabla jR{ik}+\frac1{2(n-1)}\left(\nabla jRg{ik}-\nabla_kRg_{ij}\right)[5].
  • Cotton tensor's maintained by WikiProject is recorded as WikiProject Mathematics[6].
  • Cotton tensor's Microsoft Academic ID is recorded as 2781134304[7].
  • Cotton tensor's in defining formula is recorded as C_{ijk}[8].
  • Cotton tensor's in defining formula is recorded as \nabla[9].
  • Cotton tensor's in defining formula is recorded as R_{ij}[10].
  • Cotton tensor's in defining formula is recorded as g_{ij}[11].
  • Cotton tensor's in defining formula is recorded as n[12].
  • Cotton tensor's Encyclopedia of China is recorded as 299289[13].

Why It Matters

Cotton tensor ranks in the top 2% of general entities by monthly Wikipedia readership (27 views/month).[1] It has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[14]

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] . Freebase Data Dumps. 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.
  10. [11] . wikidata.org.
  11. [12] . wikidata.org.
  12. [13] . wikidata.org.

Aggregate / graph-position facts

  1. [1] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [14] . Wikidata sitelinks. 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). Cotton tensor. Retrieved April 10, 2026, from https://4ort.xyz/entity/cotton-tensor
MLA “Cotton tensor.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/cotton-tensor.
BibTeX @misc{4ortxyz_cotton-tensor_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Cotton tensor}}, year = {2026}, url = {https://4ort.xyz/entity/cotton-tensor}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Cotton tensor — https://4ort.xyz/entity/cotton-tensor (retrieved 2026-04-10)

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