TY - JOUR ID - 105942 TI - Computing the Narumi-Katayama indices and its modified version of some nanostar dendrimers JO - Eurasian Chemical Communications JA - ECC LA - en SN - 2717-0535 AU - Goli Farkoush, Islam AU - Alaeiyan, Mehdi AU - Maghasedi, Mohammad AD - Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran, AD - Department of Mathematics, Iran University of Science and Technology, Narmak, Tehran 16844, Iran. Y1 - 2020 PY - 2020 VL - 2 IS - 7 SP - 771 EP - 775 KW - Narumi-Katayama index KW - modified Narumi-Katayama index KW - Molecular Graph KW - Nanostar dendrimer DO - 10.33945/SAMI/ECC.2020.7.4 N2 - Dendrimers are the highly branched organic macromolecules with successive layers or generations of branch units surrounding a central core. In mathematical chemistry, a particular attention has been given to degree-based graph invariant. The Narumi-Katayama index and its modified version of a graph G, denoted by NK(G) and NK*(G) are equal to the product of the degrees of the vertices of G. In this work we calculated the Narumi-Katayama Indices and its Modified version for some families of dendrimers such as NS1[n], NS2[n] and NS3[n]. The exact formulas of the Narumi-Katayama and Modified Narumi-Katayama indices of these dendrimers nano structures are presented in this paper. UR - https://www.echemcom.com/article_105942.html L1 - https://www.echemcom.com/article_105942_c67ad800daa09fa3f2853015ce3f6565.pdf ER -