izvor podataka: crosbi
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Comparing the Zagreb Indices (CROSBI ID 140126)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Hansen, Pierre ; Vukičević, Damir
Comparing the Zagreb Indices // Croatica chemica acta, 80 (2007), 2; 165-168
Podaci o odgovornosti
Hansen, Pierre ; Vukičević, Damir
engleski
Comparing the Zagreb Indices
Let G = (V, E) be a simple graph with n = vertical bar V vertical bar vertices and m = vertical bar E vertical bar edges ; let d(1), d(2), ..., d(n) denote the degrees of the vertices of G. If Delta = max d(i) <= 4, G is a chemical graph. The first and second Zagreb indices are defined as [GRAPHICS] We show that for all chemical graphs M-1/n <= M-2/m. This does not hold for all general graphs, connected or not.
Zagreb indices; extremal graph theory; inequalities
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