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Solutions of Detour Distance Graph Equations [PDF]

open access: yesSensors, 2022
Graph theory is a useful mathematical structure used to model pairwise relations between sensor nodes in wireless sensor networks. Graph equations are nothing but equations in which the unknown factors are graphs.
S. Celine Prabha   +7 more
doaj   +2 more sources

ON DETERMINING THE DISTANCE SPECTRUM OF A CLASS OF DISTANCE INTEGRAL GRAPHS [PDF]

open access: yesJournal of Algebraic Systems, 2023
The distance eigenvalues of a connected graph $G$ are the eigenvalues of its distance matrix‎‎$D(G)$‎. ‎A graph is called distance integral if all of its‎‎distance eigenvalues are integers.‎‎Let $n$ and $k$ be integers with $n>2k‎, ‎k\geq1$‎.
Seyed M. Mirafzal, R. Kogani
doaj   +1 more source

Learning Discriminant Spatial Features With Deep Graph-Based Convolutions for Occluded Face Detection

open access: yesIEEE Access, 2022
The use of face masks has become a widespread non-pharmaceutical practice to mitigate the transmission of COVID-19. However, achieving accurate facial detection while people wear masks or similar face occlusions is a major challenge.
Firas Albalas   +4 more
doaj   +1 more source

d-Index of Graphs [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2023
The new distance defined on a connected graph G contains of three terms: The ordinary distance between any two vertices in G, both the sum and the product of the two vertices' degrees, as this distance is more useful than the ordinary distance ...
Asmaa Aziz
doaj   +1 more source

A Study on Discrete Mathematics: Sum Distance in Neutrosophic Graphs with Application [PDF]

open access: yesNeutrosophic Sets and Systems, 2020
Distance is an important parameter in any networks/ graphs. The idea of strong sum distance in the fuzzy graph was introduced by Tom and Sunitha (2015).
Kousik Dasa   +4 more
doaj   +1 more source

On the distance spectra of m-generation n-prism graph

open access: yesAKCE International Journal of Graphs and Combinatorics, 2022
The distance matrix of a simple connected graph G is [Formula: see text] where dij is the length of a shortest path between the ith and jth vertices of G. Eigenvalues of D(G) are called the distance eigenvalues of G. The m-generation n-prism graph or (m,
Fouzul Atik   +2 more
doaj   +1 more source

On Hamiltonian Paths and Cycles in Sufficiently Large Distance Graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
Graph ...
Christian Löwenstein   +2 more
doaj   +1 more source

Monophonic Distance in Graphs [PDF]

open access: yesDiscrete Mathematics, Algorithms and Applications, 2011
For any two vertices u and v in a connected graph G, a u – v path is a monophonic path if it contains no chords, and the monophonic distance dm(u, v) from u to v is defined as the length of a longest u – v monophonic path in G. A u – v monophonic path of length dm(u, v) is called a u – v monophonic. The monophonic eccentricity em(v) of a vertex v in G
A. P. Santhakumaran, P. Titus
openaire   +2 more sources

Distance labeling in graphs [PDF]

open access: yesJournal of Algorithms, 2004
Summary: We consider the problem of labeling the nodes of a graph in a way that will allow one to compute the distance between any two nodes directly from their labels (without using any additional information). Our main interest is in the minimal length of labels needed in different cases.
Gavoille, Cyril   +3 more
openaire   +4 more sources

Distance Domination and Distance Irredundance in Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2007
A set $D\subseteq V$ of vertices is said to be a (connected) distance $k$-dominating set of $G$ if the distance between each vertex $u\in V-D$ and $D$ is at most $k$ (and $D$ induces a connected graph in $G$). The minimum cardinality of a (connected) distance $k$-dominating set in $G$ is the (connected) distance $k$-domination number of $G$, denoted ...
Adriana Hansberg   +2 more
openaire   +2 more sources

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