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1-planar graph

graph that can be drawn in the Euclidean plane in such a way that each edge has at most one crossing point with a single additional edge
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1-planar graph

Summary

1-planar graph ranks in the top 2% of general entities by monthly Wikipedia readership (18 views/month).[1]

Key Facts

  • 1-planar graph's image is recorded as 3-crossing Heawood graph.svg[2].
  • 1-planar graph's subclass of is recorded as graph[3].
  • 1-planar graph's Commons category is recorded as 1-planar graphs[4].
  • 1-planar graph's Freebase ID is recorded as /m/0py1kh5[5].
  • 1-planar graph's studied by is recorded as graph theory[6].
  • 1-planar graph's MathWorld ID is recorded as 1-PlanarGraph[7].
  • 1-planar graph's maintained by WikiProject is recorded as WikiProject Mathematics[8].
  • 1-planar graph's Microsoft Academic ID is recorded as 102192266[9].
  • 1-planar graph's OpenAlex ID is recorded as C102192266[10].
  • 1-planar graph's introduced in is recorded as Ein Sechsfarbenproblem auf der Kugel[11].

Why It Matters

1-planar graph ranks in the top 2% of general entities by monthly Wikipedia readership (18 views/month).[1] It has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[12] It is known by 3 alternative names across languages and contexts.[13]

Related Entities

graph theory

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.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . OpenAlex. Retrieved . docs.openalex.org. Provenance: wikidata.org.
  10. [11] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [12] ↑ . Wikidata sitelinks. wikidata.org.
  3. [13] ↑ . 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). 1-planar graph. Retrieved April 11, 2026, from https://4ort.xyz/entity/1-planar-graph
MLA “1-planar graph.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Apr. 2026, https://4ort.xyz/entity/1-planar-graph.
BibTeX @misc{4ortxyz_1-planar-graph_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{1-planar graph}}, year = {2026}, url = {https://4ort.xyz/entity/1-planar-graph}, note = {Accessed: 2026-04-11}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 1-planar graph — https://4ort.xyz/entity/1-planar-graph (retrieved 2026-04-11)

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