We show that a graph is weakly triangulated, or weakly chordal, if and only if it can be generated by starting with a graph with no edges, and repeatedly adding an edge, so that the new edge is not the middle edge of any chordless path with four vertices. This is a corollary of results due to Sritha
Spanning triangulations in graphs
✍ Scribed by Daniela Kühn; Deryk Osthus
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 467 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
We prove that every graph of sufficiently large order n and minimum degree at least 2__n__/3 contains a triangulation as a spanning subgraph. This is best possible: for all integers n, there are graphs of order n and minimum degree ⌈2__n__/3⌉ − 1 without a spanning triangulation. © 2005 Wiley Periodicals, Inc. J Graph Theory
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