Results 31 to 40 of about 878 (132)

Complement of the generalized total graph of fields

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let R be a commutative ring and H be a multiplicative prime subset of R. The generalized total graph is the undirected simple graph with vertex set R and two distinct vertices x and y are adjacent if For a field F, is the only multiplicative prime subset
T. Tamizh Chelvam, M. Balamurugan
doaj   +1 more source

Computing Edge Weights of Magic Labeling on Rooted Products of Graphs

open access: yesMathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
Labeling of graphs with numbers is being explored nowadays due to its diverse range of applications in the fields of civil, software, electrical, and network engineering. For example, in network engineering, any systems interconnected in a network can be converted into a graph and specific numeric labels assigned to the converted graph under certain ...
Jia-Bao Liu   +3 more
wiley   +1 more source

Fan's condition on induced subgraphs for circumference and pancyclicity [PDF]

open access: yesOpuscula Mathematica, 2017
Let \(\mathcal{H}\) be a family of simple graphs and \(k\) be a positive integer. We say that a graph \(G\) of order \(n\geq k\) satisfies Fan's condition with respect to \(\mathcal{H}\) with constant \(k\), if for every induced subgraph \(H\) of \(G ...
Wojciech Wideł
doaj   +1 more source

On pancyclism in hamiltonian graphs

open access: yesDiscrete Mathematics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kouider, Mekkia, Marczyk, Antoni
openaire   +2 more sources

Geodesic-pancyclic graphs

open access: yesDiscrete Applied Mathematics, 2007
A graph \(G\) is said to be geodesic-pancyclic if every path of length \(d\) between any two vertices \(u\) and \(v\) at distance \(d\) (i.e., the shortest path between \(u\) and \(v\)) can be completed to a cycle of length \(\ell\) for every \(\ell=\max\{2d,3\},\dots,n\).
Hung-Chang,C. A.   +3 more
openaire   +2 more sources

Forbidden Pairs and (k,m)-Pancyclicity

open access: yesDiscussiones Mathematicae Graph Theory, 2017
A graph G on n vertices is said to be (k, m)-pancyclic if every set of k vertices in G is contained in a cycle of length r for each r ∈ {m, m+1, . . . , n}.
Crane Charles Brian
doaj   +1 more source

Local properties of graphs that induce global cycle properties [PDF]

open access: yesOpuscula Mathematica
A graph \(G\) is locally Hamiltonian if \(G[N(v)]\) is Hamiltonian for every vertex \(v\in V(G)\). In this note, we prove that every locally Hamiltonian graph with maximum degree at least \(|V(G)| - 7\) is weakly pancyclic.
Yanyan Wang, Xiaojing Yang
doaj   +1 more source

Pancyclicity of Hamiltonian graphs

open access: diamondJournal of the European Mathematical Society
An n -vertex graph is Hamiltonian if it contains a cycle that covers all of its vertices, and it is pancyclic if it contains cycles of all lengths from 3 up to
Nemanja Draganić   +2 more
openalex   +3 more sources

A sufficient condition for pre-Hamiltonian cycles in bipartite digraphs

open access: yes, 2017
Let $D$ be a strongly connected balanced bipartite directed graph of order $2a\geq 10$ other than a directed cycle. Let $x,y$ be distinct vertices in $D$.
Darbinyan, Samvel Kh.   +1 more
core   +1 more source

Proof of a conjecture of Thomassen on Hamilton cycles in highly connected tournaments

open access: yesProceedings of the London Mathematical Society, Volume 109, Issue 3, Page 733-762, September 2014., 2014
A conjecture of Thomassen from 1982 states that, for every k, there is an f(k) so that every strongly f(k)‐connected tournament contains k edge‐disjoint Hamilton cycles. A classical theorem of Camion, that every strongly connected tournament contains a Hamilton cycle, implies that f(1)=1. So far, even the existence of f(2) was open.
Daniela Kühn   +3 more
wiley   +1 more source

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