Naslov
Comparison of the Hosoya Z-indices for simple and general graphs of the same size

Autori
Vukičević, Damir ; Trinajstić, Nenad

Izvornik
Croatica chemica acta (0011-1643) 78 (2005); 235-239

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
General graphs; Hosoya z-index; Molecular graphs; Simple graphs

Sažetak
In the extension of our previous work (Ref. 1), the average values of the Z-indices have been computed for the simple and general graphs of the same size. Three results have been obtained: (i) General graphs have always higher average values of the Z-indices than the corresponding simple graphs, (ii) Replacement of the non-cut-edge of the graph with a loop increases the value of the Z-index, and (iii) The value of the Z-index of a path with a loop attached to its second vertex is higher than or equal to the value of the Z-index of the cycle of the same size.

Izvorni jezik
Engleski

Znanstvena područja
Matematika, Kemija

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