講座主題: Integer flows and modular flows of signed graphs
專家姓名:羅榮
工作單位:美國西弗吉尼亞大學
講座時間:2018年6月18日下午2:30
講座地點:數學院大會議室
主辦單位:煙臺大學數學與信息科學學院
內容摘要:
For ordinary graphs, Tutte proved that the integer flows and modular flows are equivalent. However this equivalence doesn't hold for signed graphs. In this talk, I will discuss how to convert modular flows into integer flows and present some new results on flows on signed graphs.
主講人介紹:
羅榮,美國西弗吉尼亞大學(West Virginia University,USA)數學系教授。主要研究圖的染色理論和流的理論。發表60余篇論文多數在圖論頂尖雜志上,如Journal of Cominatorial Theory Ser. B, Journal of Graph Theory, SIAM Journal on Discrete Math, European J. of Combinatorics.