Results 71 to 80 of about 234 (95)

Quasirandom Graphs and the Pantograph Equation. [PDF]

open access: yesAm Math Mon, 2021
Shapira A, Tyomkyn M.
europepmc   +1 more source

Minimum covering reciprocal distance signless Laplacian energy of graphs

open access: yesActa Universitatis Sapientiae: Informatica, 2018
Let G be a simple connected graph.
Alhevaz Abdollah   +3 more
doaj   +1 more source

On the maximum atom-bond sum-connectivity index of graphs

open access: yesOpen Mathematics
The atom-bond sum-connectivity (ABS) index of a graph GG with edges e1,…,em{e}_{1},\ldots ,{e}_{m} is the sum of the numbers 1−2(dei+2)−1\sqrt{1-2{\left({d}_{{e}_{i}}+2)}^{-1}} over 1≤i≤m1\le i\le m, where dei{d}_{{e}_{i}} is the number of edges adjacent
Alraqad Tariq   +3 more
doaj   +1 more source

Some results involving the Aα-eigenvalues for graphs and line graphs

open access: yesSpecial Matrices
Let GG be a simple graph with adjacency matrix A(G)A\left(G), degree diagonal matrix D(G),D\left(G), and let l(G)l\left(G) be the line graph of GG. In 2017, Nikiforov defined the Aα{A}_{\alpha }-matrix of GG, Aα(G){A}_{\alpha }\left(G), as a linear ...
da Silva Júnior João Domingos G.   +2 more
doaj   +1 more source

On the δ-chromatic numbers of the Cartesian products of graphs

open access: yesOpen Mathematics
In this work, we study the δ\delta -chromatic number of a graph, which is the chromatic number of the δ\delta -complement of a graph. We give a structure of the δ\delta -complements and sharp bounds on the δ\delta -chromatic numbers of the Cartesian ...
Tangjai Wipawee   +2 more
doaj   +1 more source

On Properties of Distance-Based Entropies on Fullerene Graphs. [PDF]

open access: yesEntropy (Basel), 2019
Ghorbani M   +4 more
europepmc   +1 more source

The F-coindex of some graph operations. [PDF]

open access: yesSpringerplus, 2016
De N, Nayeem SM, Pal A.
europepmc   +1 more source

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