Graph Theory and Computing

List of Contributors

Preface

Alternating Chain Methods: A Survey


1. Historical Background


2. The Maximum Matching Problem


3. The Maximum c-Matching Problem


4. The Maximum Stable Set Problem

References

The Average Height of Planted Plane Trees

How to Number a Graph


1. A Statement of the Problem


2. A Context for the Problem


3. A History of Subproblems


4. Necessary Conditions for Graceful Graphs


5. Classes of Graceful Graphs


6. Some General Questions


7. Euclidean Models and Complete Graphs


8. Numbered Graphs and Difference Sets


9. Summary of Unsolved Problems


10. Postscript

Evolution of the Path Number of a Graph: Covering and Packing in Graphs, II


1. History


2. Results on the Path Number


3. The Unrestricted Path Number


4. Unsolved Problems

References

The Production of Graphs by Computer


1. Introduction


2. Definitions and Terminology


3. Problems


4. Representation and Identification of Graphs in a Computer


5. Production of Simple Graphs


6. Production of Star Topologies


7. Production of Stars Having a Given Topology

References

A Graph-Theoretic Programming Language


1. Introduction


2. Design Considerations


3. FORTRAN Characteristics of GTPL


4. The Graph-Theoretical Statements of GTPL


5. Notes on Graph Theory Algorithms


6. Sample Programs


7. Concluding Remarks

References

Entropy of Transformed Finite-State Automata and Associated Languages


1. Introduction


2. Preliminaries


3. S Transformation of Automata


4. Entropy of S-Transformed Automata

References

Counting Hexagonal and Triangular Polyominoes


1. Introduction


2. Bounding Hexagons


3. Symmetries


4. Counting Algorithm


5. Performance, Results, and Omissions


6. Asymptotic Behavior

References

Symmetry of Cubical and General Polyominoes


1. Hypercubic Polyominoes and Their Symmetry


2. The Hyperoctahedral Group Od


3. The Existence of Models


4. Cubical Counts

References

Graph Coloring Algorithms


1. Introduction


2. Sequential Vertex Colorings


3. 5 Coloring Planar Graphs


4. Coloring Random Graphs

References

Algebraic Isomorphism Invariants for Graphs of Automata


1. Introduction


2. Finite Automata and Transition Graphs


3. Algebraic Isomorphism Invariants


4. Disconnected Graphs and Elementary Divisors


5. Permutation Graphs


6. Forests


7. Arbitrary Transition Graphs

References

The Coding of Various Kinds of Unlabeled Trees


1. Introduction: Coding in General


2. Definitions


3. Binary Codes for Planted Plane Trees


4. Binary Codes for Plane Rooted Trees


5. Binary Codes for Rooted Trees


6. The Decoding Algorithm


7. Binary Codes for Unrooted Trees


8. A Streamlined Algorithm for Coding Unrooted Trees


9. Some Properties of Tree Codes


10. Canonical Labelings


11. Valency Codes


12. Unrooted Trees Again

References

A Graph-Theoretic Study of the Numerical Solution of Sparse Positive Definite Systems of Linear Equations


1. Introduction


2. The Elimination Process


3. Triangulated Graphs


4. Optimal Ordering and Algorithms

References

Intelligent Graphs: Networks of Finite Automata Capable of Solving Graph Problems


1. Introduction to Myopic Algorithms


2. Finite Graphs and Finite Automata


3. Elementary Problem-Solving Automata


4. More Complex Problems

References

An Algorithm for a General Constrained Set Covering Problem


1. The General Constrained Set Covering Problem


2. Notation and Main Concepts


3. The Algorithm

References

Tripartite Path Numbers


1. Introduction


2. Elementary Results


3. Extensions of Previous Algorithms


4. The Exceptional Case


5. The Complete n-Partite Graph

References

Non-Hamiltonian Planar Maps

A Top-Down Algorithm for Constructing Nearly Optimal Lexicographic Trees


1. Introduction


2. An Application


3. Basis of a Top-Down Algorithm


4. Algorithm for Nearly Optimal Lexicographic Trees


5. Choosing Parameters of the Algorithm


6. Time to Construct the Nearly Optimal Tree


7. Tests of the Algorithm


8. Summary

References

Index