A (k; g)-graph is a k-regular graph with girth g. Let f (k; g) be the smallest integer ν such there exists a (k; g)-graph with ν vertices. A (k; g)-cage is a (k; g)-graph with f (k; g) vertices. In this paper we prove that the cages are monotonic in that f (k; g 1 ) < f(k; g 2 ) for all k ≥ 3 and 3
On the connectivity of semiregular cages
✍ Scribed by C. Balbuena; D. González-Moreno; X. Marcote
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 186 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0028-3045
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✦ Synopsis
Abstract
An ({r, r + 1}; g)‐cage is a graph with degree set {r, r + 1}, girth g, and with the smallest possible order; every such graph is called a semiregular cage. In this article, semiregular cages are shown to be maximally edge‐connected and 2‐connected. As a consequence, ({3, 4}; g)‐cages are proved to be maximally connected. © 2009 Wiley Periodicals, Inc. NETWORKS, 2010
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