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Arf invariant

invariant of quadratic forms over fields of characteristic 2
Thing invariant Q4789139
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Arf invariant

Summary

Arf invariant is an invariant[1]. It draws 41 Wikipedia views per month (invariant category, ranking #21 of 37).[2]

Key Facts

  • Arf invariant's instance of is recorded as invariant[3].
  • Arf invariant's instance of is recorded as mathematical concept[4].
  • Cahit Arf is named after Arf invariant[5].
  • Arf invariant's Freebase ID is recorded as /m/0gyjhb[6].
  • Arf invariant's MathWorld ID is recorded as ArfInvariant[7].
  • Arf invariant's nLab ID is recorded as Arf invariant[8].
  • Arf invariant's maintained by WikiProject is recorded as WikiProject Mathematics[9].
  • Arf invariant's Microsoft Academic ID is recorded as 730256[10].

Why It Matters

Arf invariant draws 41 Wikipedia views per month (invariant category, ranking #21 of 37).[2]

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.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.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). Arf invariant. Retrieved May 3, 2026, from https://4ort.xyz/entity/arf-invariant
MLA “Arf invariant.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/arf-invariant.
BibTeX @misc{4ortxyz_arf-invariant_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Arf invariant}}, year = {2026}, url = {https://4ort.xyz/entity/arf-invariant}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Arf invariant — https://4ort.xyz/entity/arf-invariant (retrieved 2026-05-03)

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