Degree Sequence Conditions for Maximally Edge-Connected and Super Edge-Connected Hypergraphs

被引:0
|
作者
Shuang Zhao
Yingzhi Tian
Jixiang Meng
机构
[1] Xinjiang University,College of Mathematics and System Sciences
来源
Graphs and Combinatorics | 2020年 / 36卷
关键词
Degree sequence; Edge-connectivity; Hypergraph; Maximally edge-connected; Super edge-connected;
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学科分类号
摘要
Let H be a connected hypergraph with minimum degree δ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\delta$$\end{document} and edge-connectivity λ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\lambda$$\end{document}. The hypergraph H is maximally edge-connected if λ=δ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\lambda = \delta$$\end{document}, and it is super edge-connected or super-λ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\lambda$$\end{document}, if every minimum edge-cut consists of edges incident with some vertex. There are several degree sequence conditions, for example, Goldsmith and White (Discrete Math 23: 31–36, 1978) and Bollobás (Discrete Math 28:321–323, 1979) etc. for maximally edge-connected graphs and super-λ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\lambda$$\end{document} graphs. In this paper, we generalize these and some other degree sequence conditions to uniform hypergraphs.
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页码:1065 / 1078
页数:13
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