SAHELI, M., JALALI RAD, M. (2012). Computing GA4 Index of Some Graph Operations. Iranian Journal of Mathematical Chemistry, 3(Supplement 1), 19-28. doi: 10.22052/ijmc.2012.5271

M. SAHELI; M. JALALI RAD. "Computing GA4 Index of Some Graph Operations". Iranian Journal of Mathematical Chemistry, 3, Supplement 1, 2012, 19-28. doi: 10.22052/ijmc.2012.5271

SAHELI, M., JALALI RAD, M. (2012). 'Computing GA4 Index of Some Graph Operations', Iranian Journal of Mathematical Chemistry, 3(Supplement 1), pp. 19-28. doi: 10.22052/ijmc.2012.5271

SAHELI, M., JALALI RAD, M. Computing GA4 Index of Some Graph Operations. Iranian Journal of Mathematical Chemistry, 2012; 3(Supplement 1): 19-28. doi: 10.22052/ijmc.2012.5271

The geometric-arithmetic index is another topological index was defined as 2 deg ( )deg ( ) ( ) deg ( ) deg ( ) G G uv E G G u v GA G u v , in which degree of vertex u denoted by degG (u). We now define a new version of GA index as 4 ( ) 2 ε ( )ε ( ) ( ) ε ( ) ε ( ) G G e uv E G G G u v GA G u v , where εG(u) is the eccentricity of vertex u. In this paper we compute this new topological index for two graph operations.