Let ฮด, ฮณ, i and ฮฑ be respectively the minimum degree, the domination number, the independent domination number and the independence number of a graph G. The graph G is 3-ฮณ-critical if ฮณ = 3 and the addition of any edge decreases ฮณ by 1. It was conjectured that any connected 3-ฮณ-critical graph satisf
Domination critical graphs with higher independent domination numbers
โ Scribed by Ao, S.; Cockayne, E.J.; MacGillivray, G.; Mynhardt, C.M.
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 348 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0364-9024
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โฆ Synopsis
We show that for each k L 4 there exists a connected k-domination critical graph with independent domination number exceeding k, thus disproving a conjecture of Sumner and Blitch ( J Cornbinatorial Theory B 34 (19831, 65-76) in all cases except k = 3.
๐ SIMILAR VOLUMES
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