Intersection digraphs analogous to undirected intersection graphs are introduced. Each vertex is assigned an ordered pair of sets, with a directed edge uu in the intersection digraph when the "source set" of u intersects the "terminal set" of u. Every n-vertex digraph is an intersection digraph of o
โฆ LIBER โฆ
A class of acyclic digraphs with interval competition graphs
โ Scribed by Han Hyuk Cho; Suh-Ryung Kim
- Book ID
- 108112505
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 195 KB
- Volume
- 148
- Category
- Article
- ISSN
- 0166-218X
No coin nor oath required. For personal study only.
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Kratzke, T.M. and D.B. West, The total interval number of a graph, I: Fundamental classes, Discrete Mathematics 118 (1993) 145-156. A multiple-interval representation of a simple graph G assigns each vertex a union of disjoint real intervals, such that vertices are adjacent if and only if their assi