Results 81 to 90 of about 187 (132)

Power graphs and exchange property for resolving sets

Open Mathematics, 2019
Classical applications of resolving sets and metric dimension can be observed in robot navigation, networking and pharmacy. In the present article, a formula for computing the metric dimension of a simple graph wihtout singleton twins is given.
Abbas Ghulam, Ali Usman, Munir Mobeen, Bokhary Syed Ahtsham Ul Haq, Kang Shin Min   +4 more
doaj   +1 more source

Computational analysis for eccentric neighborhood Zagreb indices and their significance. [PDF]

Heliyon, 2023
Ahmed H, Saleh A, Ismail R, M RS, Alameri A.   +4 more
europepmc   +1 more source

The Serial Transitive Closure Problem for Trees

, 2002
The serial transitive closure problem is the problem of, given a directed graph G and a list of edges, called closure edges, which are in the transitive closure of the graph, to generate all the closure edges from edges in G.

core  

Invariant Factors of Graphs associated with Hyperplane Arrangements

, 2008
A matrix called Varchenko matrix associated with a hyperplane arrangement was defined by Varchenko in 1991. Matrices that we shall call q-matrices are induced from Varchenko matrices.
Wai Chee Shiu
core  

Symmetries and symmetry-breaking in arithmetic graphs. [PDF]

Heliyon, 2023
Shah A, Javaid I, Rehman SU.
europepmc   +1 more source

Comparative Study of Planar Octahedron Molecular Structure via Eccentric Invariants. [PDF]

Molecules, 2023
Chu ZQ, Ali H, Ali DA, Nadeem M, Kirmani SAK, Ali P.   +5 more
europepmc   +1 more source

n-Semimetric

, 1998
We introduce n-semimetrics as a common extension of n-metrics and certain recent applied notions like the 2-way distance. The n-semimetrics are totally symmetric maps from E n+1 into R+ satisfying the simplex inequality, a direct extension of the ...
M. -m. Deza, Uperieure S Ormale, N Ecole, M. Deza, I.G. Rosenberg   +4 more
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A cospectral construction for the generalized distance matrix

Special Matrices
The generalized distance matrix of a graph is a matrix in which the (i,j)\left(i,j)th entry is a function, ff, of the distance between vertex ii and vertex jj.
Friesen Ori, Kolko Cecily, Layman Nick, Lorenzen Kate, Zaske Sarah, Zeigler Amy   +5 more
doaj   +1 more source

On zero-divisors of near-rings of polynomials

, 2019
In this paper, we are interested to study zero-divisor properties of a 0- symmetric nearring of polynomials R0[x], when R is a commutative ring. We show that for a reduced ring R, the set of all zero-divisors of R0[x], namely Z(R0[x]), is an ideal of R0 ...
Shokuhifar, Fatemeh, Hashemi, Ebrahim, Alhevaz, Abdollah   +2 more
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Topological Indices and New Graph Structures

, 2012
A topological representation of a molecule can be carried out through molecular graph. The descriptors are numerical values associated with chemical constitution for correlation of chemical structure with various physical properties, chemical reactivity ...
S Ramakrishnan, J Baskar Babujee
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