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Let $Gamma=(V,E)$ be a simple connected graph. $d(alpha,epsilon)=min{d(alpha, w), d(alpha, d}$ computes the distance between a vertex $alpha in V(Gamma)$ and an edge $epsilon=wdin E(Gamma)$. A single vertex $alpha$ is said to recognize (resolve) two different edges $epsilon_{1}$ and $epsilon_{2}$ from $E(Gamma)$ if $d(alpha, epsilon_{2}) eq d(alpha, epsilon_{1}}$. A subset of distinct ordered vertices $U_{E}subseteq V(Gamma)$ is said to be an edge metric generator for $Gamma$ if every pair of distinct edges from $Gamma$ are recognized by some element of $U_{E}$. An edge metric generator with a minimum number of elements in it, is called an edge metric basis for $Gamma$. Then, the cardinality of this edge metric basis of $Gamma$, is called the edge metric dimension of $Gamma$, denoted by $edim(Gamma)$. The concept of studying chemical structures using graph theory terminologies is both appealing and practical. It enables chemical researchers to more precisely and easily examine various chemical topologies and networks. In this article, we investigate a fascinating cluster of organic chemistry as a result of this motivation. We consider a zigzag edge coronoid fused with starphene and find its minimum vertex and edge metric generators.
For an ordered subset $S = {s_1, s_2,dots s_k}$ of vertices and a vertex $u$ in a connected graph $G$, the metric representation of $u$ with respect to $S$ is the ordered $k$-tuple $ r(u|S)=(d_G(v,s_1), d_G(v,s_2),dots,$ $d_G(v,s_k))$, where $d_G(x,y
A graphene nanoribbon with zigzag edges has a gapped magnetic ground state with an antiferromagnetic inter-edge superexchange interaction. We present a theory based on asymptotic properties of the Dirac-model ribbon wavefunction which predicts $W^{-2
A set of vertices $W$ in a graph $G$ is called resolving if for any two distinct $x,yin V(G)$, there is $vin W$ such that ${rm dist}_G(v,x) eq{rm dist}_G(v,y)$, where ${rm dist}_G(u,v)$ denotes the length of a shortest path between $u$ and $v$ in the
A graph is edge-primitive if its automorphism group acts primitively on the edge set, and 2-arc-transitive if its automorphism group acts transitively on the set of 2-arcs. In this paper, we present a classification for those edge-primitive graphs wh
A classic theorem of Euclidean geometry asserts that any noncollinear set of $n$ points in the plane determines at least $n$ distinct lines. Chen and Chvatal conjectured that this holds for an arbitrary finite metric space, with a certain natural def