In a simultaneous colouring of the edges and faces of a plane graph we colour edges and faces so that every two adjacent or incident pair of them receive different colours. In this paper we prove a conjecture of Mel'nikov which states that for this colouring every plane graph can be coloured with 2+
Simultaneous coloring of edges and faces of plane graphs
✍ Scribed by Oleg V. Borodin
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 888 KB
- Volume
- 128
- Category
- Article
- ISSN
- 0012-365X
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✦ Synopsis
The edges and faces of a plane graph are colored so that every two adjacent or incident of them are colored differently. The minimal number of colors for this kind of coloring is estimated. For the plane graphs of the maximal degree at least 10, the bound is the best possible. The proof is based on some new generalizations of Kotzig's Theorem on the minimal weight of edges in plane graphs. Another tool is the concept of assigned coloring (choosability).
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