Graphs, partitions and Fibonacci numbers
Discrete Applied Mathematics
Turán's theorem and k-connected graphs
Journal of Graph Theory
Maximizing the number of independent subsets over trees with bounded degree
Journal of Graph Theory
Facet defining inequalities among graph invariants: The system GraPHedron
Discrete Applied Mathematics
The number of independent sets in unicyclic graphs
Discrete Applied Mathematics
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The Fibonacci index of a graph is the number of its stable sets. This parameter is widely studied and has applications in chemical graph theory. In this paper, we establish tight upper bounds for the Fibonacci index in terms of the stability number and the order of general graphs and connected graphs. Turán graphs frequently appear in extremal graph theory. We show that Turán graphs and a connected variant of them are also extremal for these particular problems.