HASNI, R., ARIF, N. (2012). Fourth order and fourth sum connectivity indices of tetrathiafulvalene dendrimers. Iranian Journal of Mathematical Chemistry, 3(2), 155-163. doi: 10.22052/ijmc.2012.5235

R. HASNI; N. E. ARIF. "Fourth order and fourth sum connectivity indices of tetrathiafulvalene dendrimers". Iranian Journal of Mathematical Chemistry, 3, 2, 2012, 155-163. doi: 10.22052/ijmc.2012.5235

HASNI, R., ARIF, N. (2012). 'Fourth order and fourth sum connectivity indices of tetrathiafulvalene dendrimers', Iranian Journal of Mathematical Chemistry, 3(2), pp. 155-163. doi: 10.22052/ijmc.2012.5235

HASNI, R., ARIF, N. Fourth order and fourth sum connectivity indices of tetrathiafulvalene dendrimers. Iranian Journal of Mathematical Chemistry, 2012; 3(2): 155-163. doi: 10.22052/ijmc.2012.5235

Fourth order and fourth sum connectivity indices of tetrathiafulvalene dendrimers

^{1}Universiti Malaysia Terengganu, Terengganu, Malaysia

^{2}Universiti Sains Malaysia, Malaysia

Abstract

The m-order connectivity index (G) m of a graph G is 1 2 1 1 2 1 ... ... 1 ( ) i i im m v v v i i i m d d d G where 1 2 1 ... i i im d d d runs over all paths of length m in G and i d denotes the degree of vertex i v . Also, 1 2 1 1 2 1 ... ... 1 ( ) i i im m v v v i i i ms d d d X G is its m-sum connectivity index. A dendrimer is an artificially manufactured or synthesized molecule built up from branched units called monomers. In this paper, the 4-order connectivity and 4-sum connectivity indices of tetrathiafulvalene dendrimers are computed.