Sharp Bounds on the PI Spectral Radius

نویسندگان
NADJAFI-ARANI, M. J. ID 1
FATH-TABAR, G. H. ID 2
MIRZARGAR, M. ID 3

1 University of Kashan, I. R. Iran

2 University of Kashan, I. R. Iran

3 University of Kashan, I. R. Iran

doi
10.22052/ijmc.2010.5141
چکیده

In this paper some upper and lower bounds for the greatest eigenvalues of the PI and vertex PI matrices of a graph G are obtained. Those graphs for which these bounds are best possible are characterized.

کلیدواژه‌ها
PI Matrix, PI Energy, PI Spectral Radius