o:28910 Second Zagreb index of trees with fixed diameter en Abstract: Let G be a simple graph with vertex set V = V (G) = {v1, v2, ..., vn} and edge set E = E(G). For vi∈V (G), by di = di(G) we denote the degree (number of neighbors) of the vertex vi. The second Zagreb index is defined as M2(G) = ∑didj. In this paper, we study the minimal and maximal second Zagreb index of trees with fixed diameter. Keywords:second Zagreb index, diameter, trees 1552099 10.5937/SPSUNP2001021Z 1552101 2217-5539 2023-04-24T09:41:13.649Z 44 no 46 Emir Zogić Državni univerzitet u Novom Pazaru 0000-0002-1355-3785 Edin Glogić Državni univerzitet u Novom Pazaru person 0000-0001-6295-8298 application/pdf 68471 https://phaidrabg.bg.ac.rs/o:28910 no yes 1 70 92000001 20A01 Scientific Publications of the State University of Novi Pazar Series A: Applied Mathematics, Informatics and mechanics 12 1 21 27 2020