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Ein moderner Ansatz zur Diskussion der neuesten Entwicklungen der idealen Graphentheorie! Gestützt auf die wichtigsten Originalarbeiten erläutert der Autor gegenwärtige Forschungsaufgaben und die Verknüpfung zwischen idealen Graphen und anderen Gebieten der Mathematik. Dabei führt er auch fachübergreifende Beispiele an, u.a. die Anwendung idealer Graphen zur Frequenzzuordnung in der Nachrichtentechnik oder die semidefinite Programmierung. Nicht nur für Mathematiker, sondern auch für Informatiker und Kommunikationswissenschaftler interessant!
List of contents
List of Contributors.
Preface.
Acknowledgements.
1. Origins and Genesis (C. Berge and J.L. Ramirez Alfonsin).
Perfection.
Communication Theory.
The Perfect Graph Conjecture.
Shannon's Capacity.
Translation of the Halle-Wittenberg Proceedings.
Indian Report.
References.
2. From Conjecture to Theorem (Bruce A Reed).
Gallai's Graphs.
The Perfect Graph Theorem.
Some Polyhedral Consequences.
A Stronger Theorem.
References.
3. A Translation of Gallai's Paper: "Transitiv Orientierbare Graphen" (Frederic Maffray and Myriam Preissmann).
Introduction and Results.
The Proofs of Theorems (3.12), (3.15) and 3.16).
The Proofs of (3.18) and (3.19).
The Proofs of (3.1.16).
The Proofs of (3.1.17).
Determination of all Irreducible Graphs.
Determination of the Irreducible Graphs.
References.
4. Even Pairs (Hazel Everett et al).
Introduction.
Even Pairs and Perfect Graphs.
Perfectly Contractile Graphs.
Quasi-parity Graphs.
Recent Progress.
Odd Pairs.
References.
5. The P_4-Structure of Perfect Graphs (Stefan Hougardy).
Introduction.
P_4-Stucture: Basics, Isomorphisms and Recognition.
Modules, h-Sets, Split Graphs and Unique P_4-Structure.
The Semi-Strong perfect Graph Theorem.
The Structure of the P_4-Isomorphism Classes.
Recognizing P_4-Structure.
The P_4-Structure of Minimally Imperfect Graphs.
The Partner Structure and Other Generalizations.
P_3-Structure.
References.
6. Forbidding Holes and Antiholes (Ryan Hayward and Bruce A. Reed).
Introduction.
Graphs with No Holes.
Graphs with No Discs.
Graphs with No Long Holes.
Balanced Matrices.
Bipartitie Graphs with No Hole of Length 4k + 2.
Graphs without Even Holes.
-Perfect Graphs.
Graphs without Odd Holes.
References.
7. Perfectly Orderable Graphs: A Survey (Chinh T Hoang).
Introduction.
Classical Graphs.
Minimal Nonperfectly Orderable Graphs.
Orientations.
Generalizations of Triangulated Graphs.
Generalizations of Complements of Chordal Bipartitie Graphs.
Other Classes of Perfectly Orderable Graphs.
Vertex Orderings.
Generalizations of Perfectly Orderable Graphs.
Optimizing Perfectly Ordered Graphs.
References.
8. Cutsets in Perfect and Minimal Imperfect Graphs (Irena Rusu).
Introduction.
How Did It Start?
Main Results on Minimal Imperfect Graphs.
Applications: Star Cutsets.
Applications: Clique and Multipartite Cutsets.
Applications: Stable Cutsets.
Two (Resolved) Conjectures.
The Connectivity of Minimal Imperfect Graphs.
Some (More) Problems.
References.
9. Some Aspects of Minimal Imperfect Graphs (Myriam Preissmann and Andras Sebo).
Introduction.
Imperfect and Partitionable Graphs.
Properties.
Constructions.
References.
10. Graph Imperfection and Channel Assignment (Colin McDiarmid).
Introduction.
The Imperfection Ratio.
An Alternative Definition.
Further Results and Questions.
background on Channel Assignment.
References.
About the author
Jorge L. Ramírez-Alfonsín is the editor of Perfect Graphs, published by Wiley. Bruce Alan Reed FRSC is a Canadian mathematician and computer scientist, the Canada Research Chair in Graph Theory and a professor of computer science at McGill University. His research is primarily in graph theory.
Summary
Taking a fresh approach to graph theory, this book surveys the latest research articles, highlighting the new directions and seminal results. It also emphasizes the links the subject has to other areas of mathematics and its applications. In particular, the links between perfect graphs and frequency assignment for telecommunications are discussed.
Report
"...illuminates the relationships between perfect graph theory and other fields of scientific enquiry..." ( SciTech Book News , Vol. 26, No. 2, June 2002)
