当前位置: 首页 > 学术报告
The nullity of a graph
郭继明 教授(华东理工大学数学系主任)
2019年5月5日上午10点  闵行数学楼401报告厅

报告摘要: Let G=(V(G), E(G)) be a simple connected graph with vertex set V(G)={v_1, v_2, …, v_n} and edge set E(G). Its adjacency matrix A(G)=a_{ij}) is defined as the n by n matrix (a_{ij}), where a_{ij}=1 if v_i is adjacent to v_j, and a_{ij}=0, otherwise.

The nullity of G is the multiplicity of 0 as an eigenvalue of A(G). In this talk, we will introduce some old and new results on the nullity of a graph.

主持人:詹兴致 教授