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On bounds of eigenvalues of Randić vertex-degree-based adjacency matrix

Authors: E. Zogić; B. Borovićanin; I. Milovanović; E. Milovanović;

On bounds of eigenvalues of Randić vertex-degree-based adjacency matrix

Abstract

Let G = (V,E), V = {1,2, …, n}, be a simple graph of order n and size m, without isolated vertices. Denote by d1 ≥ d2 … ≥ dn > 0, di = d(i), a sequence of its vertex degrees. If vertices i and j are adjacent, we write i ~ j. With TI we denote a topological index that can be represented as TI = TI(G) = Σi~j F(di,dj), where F is an appropriately chosen function with the property F(x,y)=F(y,x). Randic vertex-degree-based adjacency matrix RA=(ri j) is defined as rij = Fp(di,dj) √didj, if i ~ j, and 0 otherwise. Denote by f1 ≥ f2 ≥ … ≥ fn the eigenvalues of RA. Upper and lower bounds for fi, i = 1,2, … n are obtained.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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