The edge clique graph of a graph H is the one having the edge set of H as vertex set, two vertices being adjacent if and only if the corresponding edges belong to a common complete subgraph of H . We characterize the graph classes {edge clique graphs} β© {interval graphs} as well as {edge clique grap
On probe interval graphs
β Scribed by F.R. McMorris; Chi Wang; Peisen Zhang
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 723 KB
- Volume
- 88
- Category
- Article
- ISSN
- 0166-218X
No coin nor oath required. For personal study only.
β¦ Synopsis
Probe interval graphs have been introduced in the physical mapping and sequencing of DNA as a generalization of interval graphs. We prove that probe interval graphs are weakly triangulated, and hence are perfect, and characterize probe interval graphs by consecutive orders of their intrinsic cliques.
π SIMILAR VOLUMES
A graph G = (V, E) is said to be represented by a family F of nonempty sets if there is a bijection f:V--\*F such that uv ~E if and only iff(u)Nf(v)q=~. It is proved that if G is a countable graph then G can be represented by open intervals on the real line if and only if G can be represented by clo
This paper explores the intimate connection between finite interval graphs and interval orders. Special attention is given to the family of interval orders that agree with, or provide representations of, an interval graph. Two characterizations (one by P. Hanlon) of interval graphs with essentially
We consider models for random interval graphs that are based on stochastic service systems, with vertices corresponding to customers and edges corresponding to pairs of customers that are in the system simultaneously. The number N of vertices in a connected component thus corresponds to the number o
## Abstract An interval graph is said to be extremal if it achieves, among all interval graphs having the same number of vertices and the same clique number, the maximum possible number of edges. We give an intrinsic characterization of extremal interval graphs and derive recurrence relations for t