Anton Kotzig has shown that every connected 4-regular plane graph has an A-trail, that is an Euler trail in which any two consecutive edges lie on a common face boundary. We shall characterise the 4-regular plane graphs which contain two orthogonal A-trails, that is to say two A-trails for which no
Embedding a Pair of Graphs in a Surface, and the Width of 4-dimensional Prismatoids
β Scribed by Francisco Santos; Tamon Stephen; Hugh Thomas
- Publisher
- Springer
- Year
- 2011
- Tongue
- English
- Weight
- 349 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0179-5376
No coin nor oath required. For personal study only.
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