On relations between inverse sum indeg index and multiplicative sum Zagreb index
Authors: Matejić M.M., Milovanović E.I., Milovanović I.Ž.
Keywords: Vertex degree; inverse sum indeg index; multiplicative sum Zagreb index
Abstract:
In this paper we derive some lower and upper bounds for the inverse sum indeg index, ISI = Σi~j didj di+dj, in terms of graph invariants F = Σni =1 d3i and Π* 1 = Πi~j(di+dj).