报 告 人： 束金龙 教授
报告题目：The fractional matching number and the (Laplacian) spectral radiusof graphs
报告时间：2018年1月27日（周六）16：30
报告地点：静远楼1506报告厅
主办单位：数学与统计学院、科技处
报告摘要：Afractional matching of a graph G is a function f giving each edge a number in[0,1] so that e∈Γ(v) ≤ 1 for each v ∈ V (G), where Γ(v) is the set of edgesincident to v. The fractional matching number of G, written ν(G), is themaximum of e∈E(G)f(e) over all fractional matchings. Here, we consider therelationship between the fractional number, the spectral radius and theLaplacian spectral radius of a graph.
