On the local metric dimension of t-fold wheel, Pn o Km, and generalized fan

Rokhana Ayu Solekhah; Tri Atmojo Kusmayadi

doi:10.19184/ijc.2018.2.2.4

On the local metric dimension of t-fold wheel, Pn o Km, and generalized fan

Indonesian Journal of Combinatorics ◽

10.19184/ijc.2018.2.2.4 ◽

2018 ◽

Vol 2 (2) ◽

pp. 88

Author(s):

Rokhana Ayu Solekhah ◽

Tri Atmojo Kusmayadi

Keyword(s):

Connected Graph ◽

Ordered Set ◽

Metric Dimension ◽

Minimum Cardinality ◽

Wheel Graph ◽

Metric Set ◽

Metric Basis ◽

Fan Graph

Let G be a connected graph and let u, v ∈ V(G). For an ordered set W = {w1, w2, ..., wn} of n distinct vertices in G, the representation of a vertex v of G with respect to W is the n-vector r(v∣W) = (d(v, w1), d(v, w2), ..., d(v, wn)), where d(v, wi) is the distance between v and wi for 1 ≤ i ≤ n. The set W is a local metric set of G if r(u ∣ W) ≠ r(v ∣ W) for every pair u, v of adjacent vertices of G. The local metric set of G with minimum cardinality is called a local metric basis for G and its cardinality is called a local metric dimension, denoted by lmd(G). In this paper we determine the local metric dimension of a t-fold wheel graph, Pn ⊙ Km graph, and generalized fan graph.

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Edge metric dimension of some classes of circulant graphs

Analele Universitatii Ovidius Constanta - Seria Matematica ◽

10.2478/auom-2020-0032 ◽

2020 ◽

Vol 28 (3) ◽

pp. 15-37

Author(s):

Muhammad Ahsan ◽

Zohaib Zahid ◽

Sohail Zafar

Keyword(s):

Connected Graph ◽

Ordered Set ◽

Metric Dimension ◽

Circulant Graph ◽

Circulant Graphs ◽

Minimum Cardinality ◽

Vertex Set ◽

Metric Basis

AbstractLet G = (V (G), E(G)) be a connected graph and x, y ∈ V (G), d(x, y) = min{ length of x − y path } and for e ∈ E(G), d(x, e) = min{d(x, a), d(x, b)}, where e = ab. A vertex x distinguishes two edges e1 and e2, if d(e1, x) ≠ d(e2, x). Let WE = {w1, w2, . . ., wk} be an ordered set in V (G) and let e ∈ E(G). The representation r(e | WE) of e with respect to WE is the k-tuple (d(e, w1), d(e, w2), . . ., d(e, wk)). If distinct edges of G have distinct representation with respect to WE, then WE is called an edge metric generator for G. An edge metric generator of minimum cardinality is an edge metric basis for G, and its cardinality is called edge metric dimension of G, denoted by edim(G). The circulant graph Cn(1, m) has vertex set {v1, v2, . . ., vn} and edge set {vivi+1 : 1 ≤ i ≤ n−1}∪{vnv1}∪{vivi+m : 1 ≤ i ≤ n−m}∪{vn−m+ivi : 1 ≤ i ≤ m}. In this paper, it is shown that the edge metric dimension of circulant graphs Cn(1, 2) and Cn(1, 3) is constant.

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Computing Metric Dimension and Metric Basis of 2D Lattice of Alpha-Boron Nanotubes

Symmetry ◽

10.3390/sym10080300 ◽

2018 ◽

Vol 10 (8) ◽

pp. 300 ◽

Cited By ~ 5

Author(s):

Zafar Hussain ◽

Mobeen Munir ◽

Maqbool Chaudhary ◽

Shin Kang

Keyword(s):

Electronic Structure ◽

Transport Properties ◽

Present Article ◽

Connected Graph ◽

Metric Dimension ◽

Lattice Structures ◽

Resolving Set ◽

Minimum Cardinality ◽

Mathematical Sciences ◽

Metric Basis

Concepts of resolving set and metric basis has enjoyed a lot of success because of multi-purpose applications both in computer and mathematical sciences. For a connected graph G(V,E) a subset W of V(G) is a resolving set for G if every two vertices of G have distinct representations with respect to W. A resolving set of minimum cardinality is called a metric basis for graph G and this minimum cardinality is known as metric dimension of G. Boron nanotubes with different lattice structures, radii and chirality’s have attracted attention due to their transport properties, electronic structure and structural stability. In the present article, we compute the metric dimension and metric basis of 2D lattices of alpha-boron nanotubes.

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Computing Edge Metric Dimension of One-Pentagonal Carbon Nanocone

Frontiers in Physics ◽

10.3389/fphy.2021.749166 ◽

2021 ◽

Vol 9 ◽

Author(s):

Sunny Kumar Sharma ◽

Hassan Raza ◽

Vijay Kumar Bhat

Keyword(s):

Combinatorial Chemistry ◽

Connected Graph ◽

Metric Dimension ◽

Molecular Topology ◽

Resolving Set ◽

Minimum Cardinality ◽

Crucial Information ◽

Metric Basis

Minimum resolving sets (edge or vertex) have become an integral part of molecular topology and combinatorial chemistry. Resolving sets for a specific network provide crucial information required for the identification of each item contained in the network, uniquely. The distance between an edge e = cz and a vertex u is defined by d(e, u) = min{d(c, u), d(z, u)}. If d(e1, u) ≠ d(e2, u), then we say that the vertex u resolves (distinguishes) two edges e1 and e2 in a connected graph G. A subset of vertices RE in G is said to be an edge resolving set for G, if for every two distinct edges e1 and e2 in G we have d(e1, u) ≠ d(e2, u) for at least one vertex u ∈ RE. An edge metric basis for G is an edge resolving set with minimum cardinality and this cardinality is called the edge metric dimension edim(G) of G. In this article, we determine the edge metric dimension of one-pentagonal carbon nanocone (1-PCNC). We also show that the edge resolving set for 1-PCNC is independent.

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The k-Metric Dimension of a Unicyclic Graph

Mathematics ◽

10.3390/math9212789 ◽

2021 ◽

Vol 9 (21) ◽

pp. 2789

Author(s):

Alejandro Estrada-Moreno

Keyword(s):

Linear Programming ◽

Programming Problem ◽

Connected Graph ◽

Linear Programming Problem ◽

Unicyclic Graph ◽

Metric Dimension ◽

Minimum Cardinality ◽

Metric Basis

Given a connected graph G=(V(G),E(G)), a set S⊆V(G) is said to be a k-metric generator for G if any pair of different vertices in V(G) is distinguished by at least k elements of S. A metric generator of minimum cardinality among all k-metric generators is called a k-metric basis and its cardinality is the k-metric dimension of G. We initially present a linear programming problem that describes the problem of finding the k-metric dimension and a k-metric basis of a graph G. Then we conducted a study on the k-metric dimension of a unicyclic graph.

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The Vertex-Edge Resolvability of Some Wheel-Related Graphs

Journal of Mathematics ◽

10.1155/2021/1859714 ◽

2021 ◽

Vol 2021 ◽

pp. 1-16

Author(s):

Bao-Hua Xing ◽

Sunny Kumar Sharma ◽

Vijay Kumar Bhat ◽

Hassan Raza ◽

Jia-Bao Liu

Keyword(s):

Connected Graph ◽

Metric Dimension ◽

Resolving Set ◽

Minimum Cardinality ◽

Wheel Graph ◽

Wheel Graphs ◽

Metric Dimensions ◽

Mixed Metric

A vertex w ∈ V H distinguishes (or resolves) two elements (edges or vertices) a , z ∈ V H ∪ E H if d w , a ≠ d w , z . A set W m of vertices in a nontrivial connected graph H is said to be a mixed resolving set for H if every two different elements (edges and vertices) of H are distinguished by at least one vertex of W m . The mixed resolving set with minimum cardinality in H is called the mixed metric dimension (vertex-edge resolvability) of H and denoted by m dim H . The aim of this research is to determine the mixed metric dimension of some wheel graph subdivisions. We specifically analyze and compare the mixed metric, edge metric, and metric dimensions of the graphs obtained after the wheel graphs’ spoke, cycle, and barycentric subdivisions. We also prove that the mixed resolving sets for some of these graphs are independent.

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Non-Isolated Resolving Number of Graph with Pendant Edges

Journal of Interconnection Networks ◽

10.1142/s0219265919500038 ◽

2019 ◽

Vol 19 (02) ◽

pp. 1950003

Author(s):

RIDHO ALFARISI ◽

DAFIK ◽

ARIKA INDAH KRISTIANA ◽

IKA HESTI AGUSTIN

Keyword(s):

Connected Graph ◽

Ordered Set ◽

Metric Dimension ◽

Resolving Set ◽

Minimum Cardinality ◽

Isolated Vertex

We consider V, E are respectively vertex and edge sets of a simple, nontrivial and connected graph G. For an ordered set W = {w1, w2, w3, …, wk} of vertices and a vertex v ∈ G, the ordered r(v|W) = (d(v, w1), d(v, w2), …, d(v, wk)) of k-vector is representations of v with respect to W, where d(v, w) is the distance between the vertices v and w. The set W is called a resolving set for G if distinct vertices of G have distinct representations with respect to W. The metric dimension, denoted by dim(G) is min of |W|. Furthermore, the resolving set W of graph G is called non-isolated resolving set if there is no ∀v ∈ W induced by non-isolated vertex. While a non-isolated resolving number, denoted by nr(G), is the minimum cardinality of non-isolated resolving set in graph. In this paper, we study the non isolated resolving number of graph with any pendant edges.

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Fault-Tolerant Metric Dimension of Generalized Wheels and Convex Polytopes

Mathematical Problems in Engineering ◽

10.1155/2020/1216542 ◽

2020 ◽

Vol 2020 ◽

pp. 1-8

Author(s):

Zhi-Bo Zheng ◽

Ashfaq Ahmad ◽

Zaffar Hussain ◽

Mobeen Munir ◽

Muhammad Imran Qureshi ◽

...

Keyword(s):

Present Article ◽

Open Problem ◽

Ordered Set ◽

Fault Tolerant ◽

Convex Polytopes ◽

Metric Dimension ◽

Resolving Set ◽

Minimum Cardinality ◽

Wheel Graph

For a graph G , an ordered set S ⊆ V G is called the resolving set of G , if the vector of distances to the vertices in S is distinct for every v ∈ V G . The minimum cardinality of S is termed as the metric dimension of G . S is called a fault-tolerant resolving set (FTRS) for G , if S \ v is still the resolving set ∀ v ∈ V G . The minimum cardinality of such a set is the fault-tolerant metric dimension (FTMD) of G . Due to enormous application in science such as mathematics and computer, the notion of the resolving set is being widely studied. In the present article, we focus on determining the FTMD of a generalized wheel graph. Moreover, a formula is developed for FTMD of a wheel and generalized wheels. Recently, some bounds of the FTMD of some of the convex polytopes have been computed, but here we come up with the exact values of the FTMD of two families of convex polytopes denoted as D k for k ≥ 4 and Q k for k ≥ 6 . We prove that these families of convex polytopes have constant FTMD. This brings us to pose a natural open problem about the existence of a polytope having nonconstant FTMD.

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On 2-Resolving Sets in the Join and Corona of Graphs

European Journal of Pure and Applied Mathematics ◽

10.29020/nybg.ejpam.v14i3.3977 ◽

2021 ◽

Vol 14 (3) ◽

pp. 773-782

Author(s):

Jean Mansanadez Cabaro ◽

Helen Rara

Keyword(s):

Connected Graph ◽

Ordered Set ◽

Metric Dimension ◽

Resolving Set ◽

Metric Basis

Let G be a connected graph. An ordered set of vertices {v1, ..., vl} is a 2-resolving set in G if, for any distinct vertices u, w âˆˆ V (G), the lists of distances (dG(u, v1), ..., dG(u, vl)) and (dG(w, v1), ..., dG(w, vl)) differ in at least 2 positions. If G has a 2-resolving set, we denote the least size of a 2-resolving set by dim2(G), the 2-metric dimension of G. A 2-resolving set of size dim2(G) is called a 2-metric basis for G. This study deals with the concept of 2-resolving set of a graph. ItÂ characterizes the 2-resolving set in the join and corona of graphs and determine theexact values of the 2-metric dimension of these graphs.

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Characterization of n-Vertex Graphs of Metric Dimension n − 3 by Metric Matrix

Mathematics ◽

10.3390/math7050479 ◽

2019 ◽

Vol 7 (5) ◽

pp. 479 ◽

Cited By ~ 1

Author(s):

Juan Wang ◽

Lianying Miao ◽

Yunlong Liu

Keyword(s):

Connected Graph ◽

Ordered Set ◽

Distance Matrix ◽

Metric Dimension ◽

Extremal Graphs ◽

Resolving Set ◽

Minimum Cardinality

Let G = ( V ( G ) , E ( G ) ) be a connected graph. An ordered set W ⊂ V ( G ) is a resolving set for G if every vertex of G is uniquely determined by its vector of distances to the vertices in W. The metric dimension of G is the minimum cardinality of a resolving set. In this paper, we characterize the graphs of metric dimension n − 3 by constructing a special distance matrix, called metric matrix. The metric matrix makes it so a class of graph and its twin graph are bijective and the class of graph is obtained from its twin graph, so it provides a basis for the extension of graphs with respect to metric dimension. Further, the metric matrix gives a new idea of the characterization of extremal graphs based on metric dimension.

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On The Local Metric Dimension of Line Graph of Special Graph

CAUCHY ◽

10.18860/ca.v4i3.3694 ◽

2016 ◽

Vol 4 (3) ◽

pp. 125

Author(s):

Marsidi Marsidi ◽

Dafik Dafik ◽

Ika Hesti Agustin ◽

Ridho Alfarisi

Keyword(s):

Connected Graph ◽

Ordered Set ◽

Line Graph ◽

Metric Dimension ◽

Resolving Set ◽

Minimum Cardinality

Let G be a simple, nontrivial, and connected graph. is a representation of an ordered set of k distinct vertices in a nontrivial connected graph G. The metric code of a vertex v, where , the ordered of k-vector is representations of v with respect to W, where is the distance between the vertices v and wi for 1≤ i ≤k. Furthermore, the set W is called a local resolving set of G if for every pair u,v of adjacent vertices of G. The local metric dimension ldim(G) is minimum cardinality of W. The local metric dimension exists for every nontrivial connected graph G. In this paper, we study the local metric dimension of line graph of special graphs , namely path, cycle, generalized star, and wheel. The line graph L(G) of a graph G has a vertex for each edge of G, and two vertices in L(G) are adjacent if and only if the corresponding edges in G have a vertex in common.

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