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Birkhoff–Kellogg invariant-direction theorem

Intangible theorem Q4916485
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Birkhoff–Kellogg invariant-direction theorem

Summary

Birkhoff–Kellogg invariant-direction theorem is a theorem[1].

Key Facts

  • Birkhoff–Kellogg invariant-direction theorem's instance of is recorded as theorem[2].
  • Oliver Dimon Kellogg is named after Birkhoff–Kellogg invariant-direction theorem[3].
  • George David Birkhoff is named after Birkhoff–Kellogg invariant-direction theorem[4].
  • Birkhoff–Kellogg invariant-direction theorem's Freebase ID is recorded as /m/0n5wqhc[5].
  • Birkhoff–Kellogg invariant-direction theorem's maintained by WikiProject is recorded as WikiProject Mathematics[6].

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.

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). Birkhoff–Kellogg invariant-direction theorem. Retrieved May 3, 2026, from https://4ort.xyz/entity/birkhoff-kellogg-invariant-direction-theorem
MLA “Birkhoff–Kellogg invariant-direction theorem.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/birkhoff-kellogg-invariant-direction-theorem.
BibTeX @misc{4ortxyz_birkhoff-kellogg-invariant-direction-theorem_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Birkhoff–Kellogg invariant-direction theorem}}, year = {2026}, url = {https://4ort.xyz/entity/birkhoff-kellogg-invariant-direction-theorem}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Birkhoff–Kellogg invariant-direction theorem — https://4ort.xyz/entity/birkhoff-kellogg-invariant-direction-theorem (retrieved 2026-05-03)

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