Azarbaijan Shahid Madani University Communications in Combinatorics and Optimization 2538-2128 11 3 2026 09 01 The Sombor index and multiplicative Sombor index of some products of graphs 787 826 14878 10.22049/cco.2024.30123.2321 EN Dilbak Haji Mohammad Department of Mathematics, College of Science, University of Duhok, Duhok, Kurdistan Region, Iraq Journal Article 2024 11 03 The Sombor index is a vertex degree-based topological index which it was de ned by Ivan Gutman in 2021. We study the Sombor index and the multiplicative Sombor index on  some products of graphs, crown graphs, shelf graphs, Ice-cream graphs, helm graphs, ower graphs, generalized Sierpi<span class="title-text">ń</span>ski graphs, $t$-Mycielskian graphs, $t$-ciclo graphs, and $t$-estella graphs. Then we provide some upper and lower bounds for them. https://comb-opt.azaruniv.ac.ir/article_14878_601c007a4ff3cc209e1dcf3099dde52b.pdf