Two-geodesic transitive graphs of valency six

Two-geodesic transitive graphs of valency six
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六价二测地线传递图

DOI:
10.1016/j.disc.2016.08.008
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发表时间:
2017-02
影响因子:
0.8
通讯作者:
Shangjin Xu
Shangjin Xu
中科院分区:
数学3区
文献类型:
--
作者:
Wei Jin;Weijun Liu;Shangjin Xu

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对于小于或等于图Γ的直径的正整数s,Γ的s-测地线是一条路(v0,v1,...,vs),使得v0和vs之间的距离为s.称图Γ是s-测地线传递的,如果Γ包含一条s-测地线,并且它的自同构群在t-测地线集合上是传递的,对所有的t≤ s.特别地,如果Γ是s-测地传递的,且s等于Γ的直径,则称Γ是测地传递的。本文对6度有限2-测地传递图族进行了分类。从而完全确定了测地传递图。
For a positive integer s less than or equal to the diameter of a graph Γ, an s-geodesic of Γ is a path (v 0, v 1,…, v s) such that the distance between v 0 and v s is s. The graph Γ is said to be s-geodesic transitive, if Γ contains an s-geodesic and its automorphism group is transitive on the set of t-geodesics for all t≤ s. In particular, if Γ is s-geodesic transitive with s equal to the diameter of Γ, then Γ is called geodesic transitive. In this paper, we classify the family of finite 2-geodesic transitive graphs of valency 6. Then we completely determine such graphs which are geodesic transitive.
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