## Abstract We give a 4‐chromatic planar graph, which admits a vertex partition into three parts such that the union of every two of them induces a forest. This solves a problem posed by Böhme. Also, by constructing an infinite sequence of graphs, we show that the cover degeneracy can be arbitraril
✦ LIBER ✦
On the connectedness of optimum-degeneracy graphs
✍ Scribed by Peter Zörnig; Tomas Gal
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 516 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0377-2217
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