University of KashanIranian Journal of Mathematical Chemistry2228-64896220151001M-polynomial and Degree-based Topological Indices931021010610.22052/ijmc.2015.10106ENE.DeutschPolytechnic Institute of New York UniversityS.KlavžarFaculty of Mathematics and Physics, University of Ljubljana, SloveniaJournal Article20150214Let $G$ be a graph and let $m_{ij}(G)$, $i,jge 1$, be the number of edges $uv$ of $G$ such that ${d_v(G), d_u(G)} = {i,j}$. The {em $M$-polynomial} of $G$ is introduced with $displaystyle{M(G;x,y) = sum_{ile j} m_{ij}(G)x^iy^j}$. It is shown that degree-based topological indices can be routinely computed from the polynomial, thus reducing the problem of their determination in each particular case to the single problem of determining the $M$-polynomial. The new approach is also illustrated with examples.https://ijmc.kashanu.ac.ir/article_10106_9757adf6f41e068e07ffdc82bc9d1b38.pdf