Template:Did you know nominations/Dual graph
- The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.
The result was: promoted by Cwmhiraeth (talk) 06:57, 16 November 2016 (UTC)
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Dual graph[edit]
A circular maze whose walls and halls form trees
- ... that dual graphs can explain why the halls and walls of many mazes (pictured) form interlocked trees? Source: Lyons 1998, pp. 138–139.
- Reviewed: Jun ware
Improved to Good Article status by David Eppstein (talk). Self-nominated at 22:50, 27 October 2016 (UTC).
| General: Article is new enough and long enough |
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Policy compliance:
- Adequate sourcing:
- The first paragraph in the "Properties" section (Many natural...the dual.) is unreferenced. The fourth paragraph in the "Nonplanar embeddings" section (Many of...their generalization.) is unreferenced. The third and fourth paragraphs of the "Matroids and algebraic duals" section are both unreferenced. The first paragraph in the "Applications" section (Along with...Computational study.) is unreferenced. - Neutral:
- Free of copyright violations, plagiarism, and close paraphrasing:
| Hook: Hook has been verified by provided inline citation |
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| Image: Image is freely licensed, used in the article, and clear at 100px. |
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| QPQ: Done. |
Overall: 
— Yellow Dingo (talk) 03:20, 30 October 2016 (UTC)
- @Yellow Dingo: I added sources to the first three of these paragraphs. The fourth (the one at the start of "Applications") is purely the lead to its section, and contains no claims that are not expanded in more detail with sources within the section. It doesn't need sources, any more than the lead to a whole article does. See DYK supplementary rule D2, and in particular the exception there for "paragraphs which summarize other cited content". —David Eppstein (talk) 04:26, 30 October 2016 (UTC)
with the additional sources, this is now GTG. — Yellow Dingo (talk) 04:28, 30 October 2016 (UTC)
