Results 21 to 30 of about 6,918,767 (256)

On central-peripheral appendage numbers of uniform central graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2020
In a uniform central graph (UCG) the set of eccentric vertices of a central vertex is the same for all central vertices. This collection of eccentric vertices is the centered periphery.
Sul-Young Choi, Jonathan Needleman
doaj   +1 more source

A note on star coloring of central graph of bipartite graph and corona graph of complete graph with path and cycle [PDF]

open access: yesTransactions on Combinatorics, 2012
In this paper, we find the star chromatic number of central graph of complete bipartite graph and corona graph of complete graph with path and cycle.
V. J. Vernold, M. Venkatachalam
doaj  

A Note on Total Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2015
Erratum Identification and corrections of the existing mistakes in the paper On the total graph of Mycielski graphs, central graphs and their covering numbers, Discuss. Math. Graph Theory 33 (2013) 361-371.
Forouhandeh S.F.   +4 more
doaj   +1 more source

Central limit theorem for the principal eigenvalue and eigenvector of Chung–Lu random graphs

open access: yesJournal of Physics: Complexity, 2023
A Chung–Lu random graph is an inhomogeneous Erdős–Rényi random graph in which vertices are assigned average degrees, and pairs of vertices are connected by an edge with a probability that is proportional to the product of their average degrees ...
Pierfrancesco Dionigi   +4 more
doaj   +1 more source

Graph-based implicit knowledge discovery from architecture change logs [PDF]

open access: yes, 2012
Service architectures continuously evolve as a consequence of frequent business and technical change cycles. Architecture change log data represents a source of evolution-centric information in terms of intent, scope and operationalisation to ...
Pooyan Jamshidi (5276344)   +12 more
core   +2 more sources

Total Semirelib Graph [PDF]

open access: yes, 2013
In this paper, the concept of Total semirelib graph of a planar graph is introduced. Authors present a characterization of those graphs whose total semirelib graphs are planar, outer planar, Eulerian, hamiltonian with crossing number ...
Prasad, Manjunath   +3 more
core   +1 more source

Equitable Coloring on Total Graph of Bigraphs and Central Graph of Cycles and Paths

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
The notion of equitable coloring was introduced by Meyer in 1973. In this paper we obtain interesting results regarding the equitable chromatic number 𝜒= for the total graph of complete bigraphs 𝑇(𝐾𝑚,𝑛), the central graph of cycles 𝐶(𝐶𝑛) and the central ...
J. Vernold Vivin   +2 more
doaj   +1 more source

Pragmatic Graph Rewriting Modifications [PDF]

open access: yes, 1999
We present new pragmatic constructs for easing programming in visual graph rewriting programming languages. The first is a modification to the rewriting process for nodes the host graph, where nodes specified as 'Once Only' in the LHS of a rewrite match ...
Rodgers, Peter   +3 more
core   +1 more source

On diameters estimations of the commuting graphs of Sylow $p$-subgroups of the symmetric groups

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
The commuting graph of a group $G$ is an undirected graph whose vertices are non-central elements of $G$ and two distinct vertices $x,y$ are adjacent if and only if $xy=yx$.
Yu.Yu. Leshchenko, L.V. Zoria
doaj   +3 more sources

Isolation Number of Transition Graphs

open access: yesMathematics
Let G=(V,E) be a graph and F be a family of graphs; a subset (S⊆V(G)) is said to be an F-isolating set if G[V(G)∖NG[S]] does not contain F as a subgraph for all F∈F.
Junhao Qu, Shumin Zhang
doaj   +1 more source

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