On the Toughness of Cycle Permutation Graphs
β Scribed by Chao Chong-Yun; Shaocen Han
- Book ID
- 110324142
- Publisher
- Springer
- Year
- 2001
- Tongue
- English
- Weight
- 218 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0011-4642
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π SIMILAR VOLUMES
In this paper, we construct a cycle permutation graph as a covering graph over the dumbbell graph, and give a new characterization of when two given cycle permutation graphs are isomorphic by a positive or a negative natural isomorphism. Also, we count the isomorphism classes of cycle permutation gr
Let G be a connected graph with n vertices. Let a be a permutation in S n . The a-generalized graph over G, denoted by P a (G), consists of two disjoint, identical copies of G along with edges Β£a(Β£). In this paper, we investigated the relation between diameter of P a (G) and diameter of G for any pe
## Abstract A polynomial time algorithm for testing isomorphism of permutation graphs (comparability graphs of 2βdimensional partial orders) is described. It operates by performing two types of simplifying transformations on the graph; the contraction of duplicate vertices and the contraction of un