no. 3
The average scattering number of graphs
Aslan, Ersin1 ; Kilinç, Deniz2 ; Yücalar, Fatih3 ; Borandağ, Emin4
1Turgutlu Vocational Training School, Celal Bayar University, 45400 Manisa, Turkey.
2Department of Software Engineering, Celal Bayar University, 45400 Manisa, Turkey.
3Fatih Yücalar, Department of Software Engineering, Celal Bayar University, 45400 Manisa, Turkey.
4Emin Borandağ, Department of Software Engineering, Celal Bayar University, 45400 Manisa, Turkey.
RAIRO. Theoretical Informatics and Applications, Tome 50 (2016) no. 3, pp. 263-272

The scattering number of a graph is a measure of the vulnerability of a graph. In this paper we investigate a refinement that involves the average of a local version of the parameter. If v is a vertex in a connected graph G, then sc v (G)=max{ω(G-S v )-|S v |}, where the maximum is taken over all disconnecting sets S v of G that contain v. The average scattering number of G denoted by sc av (G), is defined as s c a v ( G ) = ∑ v ∈ V ( G ) s c v ( G ) n , where n will denote the number of vertices in graph G. Like the scattering number itself, this is a measure of the vulnerability of a graph, but it is more sensitive. Next, the relations between average scattering number and other parameters are determined. The average scattering number of some graph classes are obtained. Moreover, some results about the average scattering number of graphs obtained by graph operations are given.

DOI : 10.1051/ita/2016027
Classification : 05C40, 05C69, 68M10, 68R10
Keywords: Connectivity, rupture degree, scattering number, average lower domination number, average lower independence number

Aslan, Ersin  1   ; Kilinç, Deniz  2   ; Yücalar, Fatih  3   ; Borandağ, Emin  4

1 Turgutlu Vocational Training School, Celal Bayar University, 45400 Manisa, Turkey.
2 Department of Software Engineering, Celal Bayar University, 45400 Manisa, Turkey.
3 Fatih Yücalar, Department of Software Engineering, Celal Bayar University, 45400 Manisa, Turkey.
4 Emin Borandağ, Department of Software Engineering, Celal Bayar University, 45400 Manisa, Turkey. 
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Aslan, Ersin; Kilinç, Deniz; Yücalar, Fatih; Borandağ, Emin. The average scattering number of graphs. RAIRO. Theoretical Informatics and Applications, Tome 50 (2016) no. 3, pp. 263-272. doi: 10.1051/ita/2016027

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