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    揚州大學數學科學學院歡迎您?,今天是?:?2018年6月8日 English |? 簡體中文
    揚州大學數學科學學院學術報告2020-4
    發布日期:2020-01-10

    報告題目:Closure for {K_{1,4},K_{1,4}+e}-free graphs

     

    報告簡介:

    In 1986, Thomassen presented a conjecture: Every 4-connected line graph is Hamilonian. In 1984, Mattews-Sumner also presented a weak conjecture: Every 4-connected claw-free graph is Hamiltoian. In 1997, Ryjacek invented a closure on claw-free graphs and proved that these two conjectures are equivalent. Since then, many results on claw-free graphs have been made by using Ryjacek closure method.

    In this talk, I will first brief the progress on Thomassen conjecture. Then I will introduce a closure on {K_{1,4},K_{1,4}+e}-free graphs.  As applications, many results on claw-free graphs can be extended to the class of {K_{1,4},K_{1,4}+e}-free graphs. This is a joint work with Zdenek Ryjacek and Petr Vrana.

     

    報告人:王世鵬,江蘇大學,主要研究圖論和組合數學,在圖的圈方面做出很多出色的工作。在 Journal of Combinatorial Theory, Series B, Electroinc Journal of Combunatorics, Discrete Mathematics, Graphs and Combinatorics等國際知名圖論期刊上發表論文多篇金牛彩票app。

     

    報告時間:2020年1月10日(星期5)上午 11:00.

     

    報告地點:揚州大學瘦西湖校區數學科學學院56號樓208報告廳

     

    主辦單位:揚州大學數學科學學院

     

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