## New Directions in the Theory of Graphs: Proceedings |

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### Contents

On Graphs with a Constant Link | 19 |

Some Extremal Problems on rGraphs | 53 |

On the Use of Graphs in Group Theory | 97 |

Copyright | |

7 other sections not shown

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### Common terms and phrases

acyclic adjacent appear apply automorphism called characteristic characterization combinatorial complete components condition conjecture connected consider construction containing copies corresponding counting cycle defined definition denote determine digraphs directed disjoint distinct edges elements enumeration equation exactly example exists expressed factor Figure finite finite graph fixed function give given graph G graph theory hamiltonian Harary Hence holds identity implies infinite integer interesting isomorphic joining known labeled least Lemma length limb linear lines Math Mathematics matrix methods Michigan Nash-Williams Note obtained omorphic orbits oriented pair path permutation points polynomial positive possible problem Proof proved provides rank 3 graph regular relation replaced result rooted satisfy sequence Similarly simple strong subgraph subset Suppose symmetric Theorem tion transitive trees true vertex vertices weak York