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(shù)學院大會議室
主辦單位：煙臺大學數(shù)學與信息科學學院
內(nèi)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(shù)學系教授,。主要研究圖的染色理論和流的理論,。發(fā)表60余篇論文多數(shù)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.
