Title of article :
On the harmonic index of graph operations
Author/Authors :
-، - نويسنده Don Bosco Institute of Technology, Bangalore-78, India Shwetha Shetty, B. , -، - نويسنده Dept.of Mathematics, VSK University,Bellary
Karnataka Lokesha, V. , -، - نويسنده Don Bosco Institute of Technology, Bangalore-78, India Ranjini, P. S.
Issue Information :
فصلنامه با شماره پیاپی 0 سال 2015
Abstract :
The harmonic index of a connected graph $G$, denoted by $H(G)$, is defined as $H(G)=sum_{uvin E(G)}frac{2}{d_u+d_v}$ where $d_v$ is the degree of a vertex $v$ in G. In this paper, expressions for the Harary indices of the join, corona product, Cartesian product, composition and symmetric difference of graphs are derived.
Journal title :
Transactions on Combinatorics
Journal title :
Transactions on Combinatorics
