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2015, vol. 39, br. 2, str. 155-171
Clusters and various versions of wiener-type invariants
(naslov ne postoji na srpskom)
aDepartment of Mathematics, Kazerun Branch, Islamic Azad University, Kazerun, Iran
bDepartment of Mathematics, Faculty of Mathematical Sciences, Tarbiat Modares University, Tehran, Iran

e-adresaazari@kau.ac.ir, iranmanesh@modares.ac.ir
Projekat:
Center of Excellence of Algebraic Hyper-structures and its Applications of Tarbiat Modares University (CEAHA)

Ključne reči: distance; topological index; graph product
Sažetak
(ne postoji na srpskom)
The Wiener type invariant W(λ)(G) of a simple connected graph G is defined as the sum of the terms d(u, ν ׀G)λ over all unordered pairs {u,ν} of vertices of G, where d(u, ν ׀G)λ denotes the distance between the vertices u and v in G and λ is an arbitrary real number. The cluster G1{G2} of a graph G1 and a rooted graph G2 is the graph obtained by taking one copy of G1 and |V (G1)| copies of G2, and by identifying the root vertex of the i-th copy of G2 with the i-th vertex of G1, for i = 1; 2; … ; |V (G1)|. In this paper, we study the behavior of three versions of Wiener type invariant under the cluster product. Results are applied to compute several distance-based topological invariants of bristled and bridge graphs by specializing components in clusters.
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O članku

jezik rada: engleski
vrsta rada: neklasifikovan
DOI: 10.5937/KgJMath1502155A
objavljen u SCIndeksu: 11.02.2016.

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