University of Kashan Iranian Journal of Mathematical Chemistry 2228-6489 5 2 2014 11 01 Altan Derivatives of a Graph 85 90 6127 10.22052/ijmc.2014.6127 EN Ivan Gutman Faculty of Science, University of Kragujevac, Kragujevac, Serbia Journal Article 2014 08 24 Altan derivatives of polycyclic conjugated hydrocarbons were recently introduced and studied in theoretical organic chemistry. We now provide a generalization of the altan concept, applicable to any graph. Several earlier noticed topological properties of altan derivatives of polycyclic conjugated hydrocarbons are shown to be the properties of all altan derivatives of all graphs. Among these are results pertaining to Kekulé structures/perfect matchings, determinant of the adjacency matrix, and graph spectrum. https://ijmc.kashanu.ac.ir/article_6127_acb31ccf5c46d78d329317d13a401cc2.pdf