Results 1 to 10 of about 88,501 (223)

The wiener index of the zero-divisor graph for a new class of residue class rings [PDF]

open access: yesFrontiers in Chemistry, 2022
The zero-divisor graph of a commutative ring R, denoted by Γ(R), is a graph whose two distinct vertices x and y are joined by an edge if and only if xy = 0 or yx = 0.
Yinhu Wei, Ricai Luo
doaj   +2 more sources

A graph-theoretic approach to ring analysis: Dominant metric dimensions in zero-divisor graphs [PDF]

open access: yesHeliyon
This article investigates the concept of dominant metric dimensions in zero divisor graphs (ZD-graphs) associated with rings. Consider a finite commutative ring with unity, denoted as R, where nonzero elements x and y are identified as zero divisors if ...
Nasir Ali   +4 more
doaj   +2 more sources

On directed zero-divisor graphs of finite rings [PDF]

open access: green, 2004
For an artinian ring $R$, the directed zero-divisor graph $\Gamma(R)$ is connected if and only if there is no proper one-sided identity element in $R$. Sinks and sources are characterized and clarified for finite ring $R$, especially, it is proved that ...
Wu, Tongsuo
core   +5 more sources

Classification of Zero Divisor Graphs of Commutative Rings of Degrees 11,12 and 13 [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2014
In 2005  Wang investigated the zero divisor graphs of degrees 5,6,9 and 10. In 2012 Shuker and Mohammad investigated the zero divisor graphs of degrees 7 and 8. In this paper, we consider zero divisor graphs of commutative rings of degrees 11, 12 and 13.
Nazar Shuker, Husam Mohammad
doaj   +1 more source

Total perfect codes in graphs realized by commutative rings [PDF]

open access: yesTransactions on Combinatorics, 2022
Let $R$ be a commutative ring with unity not equal to zero and let $\Gamma(R)$ be a zero-divisor graph realized by $R$. For a simple, undirected, connected graph $G = (V, E)$, a {\it total perfect code} denoted by $C(G)$ in $G$ is a subset $C(G ...
Rameez Raja
doaj   +1 more source

Comments on the Clique Number of Zero-Divisor Graphs of Zn

open access: yesJournal of Mathematics, 2022
In 2008, J. Skowronek-kazio´w extended the study of the clique number ωGZn to the zero-divisor graph of the ring Zn, but their result was imperfect. In this paper, we reconsider ωGZn of the ring Zn and give some counterexamples. We propose a constructive
Yanzhao Tian, Lixiang Li
doaj   +1 more source

On distance Laplacian spectrum of zero divisor graphs of the ring $\mathbb{Z}_{n}$

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
For a finite commutative ring $\mathbb{Z}_{n}$ with identity $1\neq 0$, the zero divisor graph $\Gamma(\mathbb{Z}_{n})$ is a simple connected graph having vertex set as the set of non-zero zero divisors, where two vertices $x$ and $y$ are adjacent if and
S. Pirzada, B.A. Rather, T.A. Chishti
doaj   +1 more source

Classification of Zero Divisor Graphs of a Commutative Ring With Degree Equal 7 and 8 [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2013
In 2005 J. T Wang investigated the zero divisor graphs of degrees 5 and 6. In this paper, we consider the zero divisor graphs of a commutative rings of degrees 7 and 8.
Nazar Shuker, Husam Mohammad
doaj   +1 more source

On distance signless Laplacian eigenvalues of zero divisor graph of commutative rings

open access: yesAIMS Mathematics, 2022
For a simple connected graph $ G $ of order $ n $, the distance signless Laplacian matrix is defined by $ D^{Q}(G) = D(G) + Tr(G) $, where $ D(G) $ and $ Tr(G) $ is the distance matrix and the diagonal matrix of vertex transmission degrees, respectively.
Bilal A. Rather   +4 more
doaj   +1 more source

Metric and upper dimension of zero divisor graphs associated to commutative rings

open access: yesActa Universitatis Sapientiae: Informatica, 2020
Let R be a commutative ring with Z*(R) as the set of non-zero zero divisors. The zero divisor graph of R, denoted by Γ(R), is the graph whose vertex set is Z*(R), where two distinct vertices x and y are adjacent if and only if xy = 0.
Pirzada S., Aijaz M.
doaj   +1 more source

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