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handshaking lemma

lemma that every node-link graph has an even number of odd-degree vertices
Intangible theorem Q954454
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handshaking lemma

Summary

handshaking lemma is a theorem[1]. It draws 172 Wikipedia views per month (theorem category, ranking #177 of 1,306).[2]

Key Facts

  • handshaking lemma's instance of is recorded as theorem[3].
  • handshake is named after handshaking lemma[4].
  • handshaking lemma's Freebase ID is recorded as /m/09v6fzj[5].
  • handshaking lemma's maintained by WikiProject is recorded as WikiProject Mathematics[6].
  • handshaking lemma's Microsoft Academic ID is recorded as 33692001[7].

Why It Matters

handshaking lemma draws 172 Wikipedia views per month (theorem category, ranking #177 of 1,306).[2] It has Wikipedia articles in 14 language editions, a strong signal of global cultural recognition.[8]

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] ↑ . Freebase Data Dumps. wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [8] ↑ . 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). handshaking lemma. Retrieved May 3, 2026, from https://4ort.xyz/entity/handshaking-lemma
MLA “handshaking lemma.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/handshaking-lemma.
BibTeX @misc{4ortxyz_handshaking-lemma_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{handshaking lemma}}, year = {2026}, url = {https://4ort.xyz/entity/handshaking-lemma}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): handshaking lemma — https://4ort.xyz/entity/handshaking-lemma (retrieved 2026-05-03)

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