نشر في Sakander Hayat
بتاريخ 2016
والبحث باللغة
English
تحميل البحث
الملخص بالإنكليزية
In this paper, we introduce the concepts of the plain eigenvalue, the main-plain index and the refined spectrum of graphs. We focus on the graphs with two main and two plain eigenvalues and give some characterizations of them.