The maximum independent set problem for cubic planar graphs
β Scribed by James E. Burns
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 286 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0028-3045
No coin nor oath required. For personal study only.
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We prove that the following problem is NP-complete: Given a cubic graph G and a natural number g, is it possible to draw G on the sphere with g handles added?
## Abstract Every 3βconnected planar, cubic, triangleβfree graph with __n__ vertices has a bipartite subgraph with at least 29__n__/24βββ7/6 edges. The constant 29/24 improves the previously best known constant 6/5 which was considered best possible because of the graph of the dodecahedron. Example
An independent set or stable set of a graph G V, E is a subset S of the Ε½ . vertices set V in which no two are adjacent. Let G be the number of vertices in Ε½ . a stable set of maximum cardinality; G is called the stability number of G. Stability numbers of a graph have been well studied, but little