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math.CO2026
Improved Lower Bounds on the General Reduced Second Zagreb Index of Trees and Unicyclic Graphs
Nasrin Dehgardi, Sandi Klavžar, Mahdieh Azari
For a simple graph and a real number , the general reduced second Zagreb index is defined by the formula A sharp lowe…
math.CO2026
Wiener and Average Distance of Irregular Square-Cell Configuration
S. Prabhu, Sandi Klavžar, M. Anitha +2
A subgraph of the square lattice with all of its inner faces being 4-cycles is called a square-cell configuration. Prior work has provided explicit expressions for the total and av…