Results 111 to 120 of about 580,793 (206)

On the Laplacian index of tadpole graphs

open access: yesSpecial Matrices
In this article, we study the Laplacian index of tadpole graphs, which are unicyclic graphs formed by adding an edge between a cycle Ck{C}_{k} and a path Pn{P}_{n}.
Braga Rodrigo O., Veloso Bruno S.
doaj   +1 more source

Planar packing of cycles and unicyclic graphs

open access: yesDemonstratio Mathematica, 2009
AbstractWe say that a graphIn this paper we show that for any packable ...
openaire   +1 more source

Graphs which have pancyclic complements

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1978
Let p and q denote the number of vertices and edges of a graph G, respectively. Let Δ(G) denote the maximum degree of G, and G¯ the complement of G. A graph G of order p is said to be pancyclic if G contains a cycle of each length n, 3≤n≤p.
H. Joseph Straight
doaj   +1 more source

Degree distance of unicyclic graphs

open access: yes, 2010
The degree distance of a connected graph G with vertex set V(G) is defined as D'(G)= ?u?V (G) dG (u)DG (u), where dG (u) denotes the degree of vertex u and DG (u) denotes the sum of distances between u and all vertices of G.
Bo Zhou, Zhibin Du
core   +1 more source

The partition dimension of the vertex amalgamation of some cycles. [PDF]

open access: yesHeliyon, 2022
Hasmawati   +4 more
europepmc   +1 more source

Conjugated tricyclic graphs with maximum variable sum exdeg index. [PDF]

open access: yesHeliyon, 2023
Rizwan M, Bhatti AA, Javaid M, Shang Y.
europepmc   +1 more source

γ-Inverse graph of some mixed graphs

open access: yesSpecial Matrices
Let GG be a graph. Then, the inverse graph G−1{G}^{-1} of GG is defined to be a graph that has adjacency matrix similar to the inverse of the adjacency matrix of GG, where the similarity matrix is ±1\pm 1 diagonal matrix. In this article, we introduced a
Boulahmar Wafa   +2 more
doaj   +1 more source

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