Results 11 to 20 of about 1,947,729 (286)

Resolving sets of vertices with the minimum size in graphs [PDF]

open access: yesریاضی و جامعه, 2023
Suppose that $G$ is a simple connected graph with vertex set $V(G)$ and edge set $E(G)$. A subset $S=\{s_1, s_2,\ldots , s_l \}$ of vertices of graph $G$ is called a doubly resolving set of $G$, if for any distinct vertices $u$ and $v$ in $G$ there are ...
Ali Zafari, Nader Habibi, Saeid Alikhani
doaj   +1 more source

Construction and analysis of graph models for multiprocessor interconnection networks [PDF]

open access: yesYugoslav Journal of Operations Research, 2022
A graph G can serve as a model for the Multiprocessor Interconnection Networks (MINs) in which the vertices represent the processors, while the edges represent connections between processors.
Hegde S.M., Saumya Y.M.
doaj   +1 more source

A number theoretic problem on super line graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2016
In Bagga et al. (1995) a generalization of the line graph concept was introduced. Given a graph G with at least r edges, the super line graph of index r, Lr(G), has as its vertices the sets of r edges of G, with two adjacent if there is an edge in one ...
Jay Bagga, Lowell Beineke, Badri Varma
doaj   +1 more source

On the Planarity of Generalized Line Graphs

open access: yesTheory and Applications of Graphs, 2019
One of the most familiar derived graphs is the line graph. The line graph $L(G)$ of a graph $G$ is that graph whose vertices are the edges of $G$ where two vertices of $L(G)$ are adjacent if the corresponding edges are adjacent in~$G$.
Khawlah H. Alhulwah   +2 more
doaj   +1 more source

Incidence matrices and line graphs of mixed graphs

open access: yesSpecial Matrices, 2023
In the theory of line graphs of undirected graphs, there exists an important theorem linking the incidence matrix of the root graph to the adjacency matrix of its line graph. For directed or mixed graphs, however, there exists no analogous result.
Abudayah Mohammad   +2 more
doaj   +1 more source

Graph Equations for Line Graphs, Jump Graphs, Middle Graphs, Splitting Graphs And Line Splitting Graphs

open access: yesMapana - Journal of Sciences, 2010
For a graph G, let G, L(G), J(G) S(G), L,(G) and M(G) denote Complement, Line graph, Jump graph, Splitting graph, Line splitting graph and Middle graph respectively. In this paper, we solve the graph equations L(G) =S(H), M(G) = S(H), L(G) = LS(H), M(G) =LS(H), J(G) = S(H), M(G) = S(H), J(G) = LS(H) and M(G) = LS(G).
B. Basavanagoud, Veena Mathad
openaire   +2 more sources

General Randić indices of a graph and its line graph

open access: yesOpen Mathematics, 2023
For a real number α\alpha , the general Randić index of a graph GG, denoted by Rα(G){R}_{\alpha }\left(G), is defined as the sum of (d(u)d(v))α{\left(d\left(u)d\left(v))}^{\alpha } for all edges uvuv of GG, where d(u)d\left(u) denotes the degree of a ...
Liang Yan, Wu Baoyindureng
doaj   +1 more source

The H-Line Signed Graph of a Signed Graph [PDF]

open access: yes, 2010
For standard terminology and notion in graph theory we refer the reader to Harary; the non-standard will be given in this paper as and when required.
Rangarajan, R.   +2 more
core   +1 more source

The study of line graphs of subdivision graphs of some rooted product graphs via K-Banhatti indices

open access: yesInternational Journal of Mathematics for Industry, 2023
The degree-based topological indices are numerical graph invariants that are used to link a molecule’s structural characteristics to its physical, and chemical characteristics.
K. J. Gowtham, N. Narahari
doaj   +1 more source

Drawing Planar Graphs with Few Geometric Primitives [PDF]

open access: yes, 2017
We define the \emph{visual complexity} of a plane graph drawing to be the number of basic geometric objects needed to represent all its edges. In particular, one object may represent multiple edges (e.g., one needs only one line segment to draw a path ...
A Igamberdiev   +13 more
core   +8 more sources

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