DIGRAPH CATEGORIES AND LINE DIGRAPH FUNCTORS

DIGRAPH CATEGORIES AND LINE DIGRAPH FUNCTORS

The authors define line digraph functors on digraph category which are full and faith-ful and,as a consequence of the result,determine all homomorphisms in De Bruijn-Goodgraph category and automorphisms of Kautz digraph category.Moreover the authorsconsider a type of arc-full morphisms of digraph ca...

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Bibliographic Details
Published in:数学年刊：B辑英文版 no. 3; pp. 368 - 373
Main Author: 张福基 李学良 黄琼湘 刘新
Format: Journal Article
Language:English
Published: 01-07-1992
Subjects:
category
consequence
determ
integer
Kraus
Number
proof
Strong
vertex
石瓜
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Summary:The authors define line digraph functors on digraph category which are full and faith-ful and,as a consequence of the result,determine all homomorphisms in De Bruijn-Goodgraph category and automorphisms of Kautz digraph category.Moreover the authorsconsider a type of arc-full morphisms of digraph category such that F~n(f) is arc-full foreach functor F~n,and succeeding paper [9] study the strong homomorphisms of de Bruijn-Good digraph.
Bibliography:ZHANG FUJI LI XUELIANG HUANG QIONGXIANG LIU XIN Departmeut of Mathematics,Xinjiang University,Urumqi,Xinjiang 830046,China.
31-1329/O1
ISSN:0252-9599
1860-6261