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SEMINAR: Groups and Combinatorics Seminar, 16:00 17/03/2017 Weatherburn LT: Hui Zhou

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Today's date is Wednesday, December 02, 2020
Groups and Combinatorics Seminar, 16:00 17/03/2017 Weatherburn LT: Hui Zhou Other events...
Speaker: Hui Zhou (University of Western Australia)

Time and place: 16:00 Friday 17/03/2017 in Weatherburn LT

Title: On top locally-s-distance-transitive graphs

Abstract: A graph with some graph symmetry property is called "top", if it cannot be viewed as a nontrivial normal quotient of some other graph with the same graph symmetry property. Therefore, a graph being top implies that it has no nontrivial normal multicovers, including normal covers. John Conway proved that every s-arc-transitive graph has a nontrivial s-arc-transitive normal cover, so there is no top s-arc-transitive graph. However, there exist top locally-s-distance-transitive graphs, and complete multipartite graphs are examples of this. In this talk, I will give a generic condition (E graphs) for locally-s-distance-transitive graphs to be top, and examples and characterizations of locally-s-distance transitive graphs.
Speaker(s) Hui Zhou (University of Western Australia)
Contact Stephen Glasby <[email protected]>
Start Fri, 17 Mar 2017 16:00
End Fri, 17 Mar 2017 17:00
Submitted by Stephen Glasby <[email protected]>
Last Updated Wed, 15 Mar 2017 09:47
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