Results 21 to 30 of about 8,236,191 (249)

EDGE MAGIC TOTAL LABELING PADA GRAPH -CYCLE BOOKS UNTUK [PDF]

open access: yes, 2019
Edge magic total labeling pada graph adalah suatu fungsi bijektif { }; dengan | | | | sehingga berlaku Bilangan disebut magic constant. Graph mempunyai super edge magic total labeling bila label vertex adalah { }.
GULTOM, ROULI TUA   +2 more
core   +5 more sources

On total directed graphs of non-commutative rings

open access: yesAKCE International Journal of Graphs and Combinatorics, 2017
For a non-commutative ring , the left total directed graph of is a directed graph with vertex set as and for the vertices and , is adjacent to if and only if there is a non-zero which is different from and , such that is a left zero-divisor of .
Kukil Kalpa Rajkhowa, Helen K. Saikia
doaj   +1 more source

Smarandache-Zagreb Index on Three Graph Operators [PDF]

open access: yes, 2010
Many researchers have studied several operators on a connected graph in which one make an attempt on subdivision of its edges. In this paper, we show how the Zagreb indices, a particular case of Smarandache-Zagreb index of a graph changes with these ...
Ranjini, P.S., Lokesha, V.
core   +1 more source

On the genus of some total graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let be a commutative ring with a proper ideal . A generalization of total graph is introduced and investigated. It is the (undirected) graph with all elements of as vertices, that two distinct vertices are adjacent if and only if where for some and is a ...
L. Hamidian Jahromi, A. Abbasi
doaj   +1 more source

Ideal Graph of a Graph [PDF]

open access: yes, 2011
In this paper, we introduce ideal graph of a graph and study some of its properties. We characterize connectedness, isomorphism of graphs and coloring property of a graph using ideal graph.
Manoharan, R., Vasuki, R.
core   +1 more source

Total Eccentricity Indices Of A Graph

open access: yes, 2021
We have defined and evaluated total eccentricity indices of polyhex nanotubes TUAC6(p, q) and TUZC6(p, q). In thispaper, we compute First Total Eccentricity Index, Second Total Eccentricity Index, First Multiplicative Total Eccentricity Index, Second ...
et. al., M. Bhanumathi,
core   +1 more source

Some distance based indices of graphs based on four new operations related to the lexicographic product

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2019
For a (molecular) graph, the Wiener index, hyper-Wiener index and degree distance index are defined as $$W(G)= \sum_{\{u,v\}\subseteq V(G)}d_G(u,v),$$ $$WW(G)=W(G)+\sum_{\{u,v\}\subseteq V(G)} d_{G}(u,v)^2,$$ and $$DD(G)=\sum_{\{u,v\}\subseteq V(G)}d_G(u,
N. Dehgardi   +2 more
doaj   +1 more source

F index of graphs based on four new operations related to the strong product

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
For a molecular graph, the first Zagreb index of a graph is equal to the sum of squares of the vertex degrees of the graph and the forgotten topological index (F-index) of a graph is defined as the sum of cubes of the vertex degrees of the graph.
D. Sarala   +3 more
doaj   +1 more source

Complete bipartite graph is a totally irregular total graph

open access: yesElectronic Journal of Graph Theory and Applications, 2021
A graph G is called a totally irregular total k-graph if it has a totally irregular total k-labeling λ : V ∪ E→ 1, 2, ... , k, that is a total labeling such that for any pair of different vertices x and y of G, their weights wt(x) and wt(y) are distinct,
Meilin I. Tilukay   +4 more
doaj   +1 more source

Labeling, Covering and Decomposing of Graphs — Smarandache’s Notion in Graph Theory [PDF]

open access: yes, 2010
This paper surveys the applications of Smarandache’s notion to graph theory appeared in International J.Math.Combin. from Vol.1,2008 to Vol.3,2009.
Mao, Linfan, Linfan Mao
core   +1 more source

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