New Issue Released We are pleased to deliver you the latest issue of Journal of Discrete Mathematics and Its Applications (Volume 9, Issue 3, Summer 2024), is online now. Further information is available in website: https://jdma.sru.ac.ir/ Please click on the links to view each article. 1. On the hierarchical product of graphs Wilfried Imrich View Article | Full Text 2. Automorphism group of a graph constructed from a lattice Shahide Malekpour; Behnam Bazigaran View Article | Full Text 3. Calculation of topological indices based on M-polynomial for polytrimethylene terephthalate Zohreh Rajabinejad; Saeed Mohammadian Semnani View Article | Full Text 4. Configuration sets; a right place for ping-pong arguments Meisam Soleimani Malekan View Article | Full Text 5. On the Cayleyness of bipartite Kneser graphs Seyed Morteza Mirafzal View Article | Full Text 6. A discussion of Feng-Liu operator and fixed point theorems on metric space Shehu Shagari Mohammed; Abubakar Alhassan Muhammad; Ibrahim Aliyu Fulatan View Article | Full Text