Results 31 to 40 of about 2,650,610 (297)

An algorithm to recognize a middle graph

open access: yesDiscrete Applied Mathematics, 1984
AbstractA graph F is called middle if there exists a graph G such that there is a one-to-one correspondence between the vertices of F and the vertices and edges of G such that two vertices of F are adjacent if and only if the corresponding elements (considered as subsets of the set of vertices) have a non-empty intersection.In this paper we present a ...
Miroslawa Skowronska, Maciej M. Syslo
openaire   +2 more sources

On Domatic Number of Some Rotationally Symmetric Graphs

open access: yesJournal of Mathematics, 2023
Domination is a well-known graph theoretic concept due to its significant real-world applications in several domains, such as design and communication network analysis, coding theory, and optimization.
Hassan Raza   +2 more
doaj   +1 more source

A Heuristic for Direct Product Graph Decomposition [PDF]

open access: yes, 2023
In this paper we describe a heuristic for decomposing a directed graph into factors according to the direct product (also known as Kronecker, cardinal or tensor product). Given a directed, unweighted graph G with adjacency matrix Adj(G), our heuristic
Moreno Marzolla   +2 more
core   +1 more source

Hamiltonicity of complements of middle graphs

open access: yesDiscrete Mathematics, 2007
Let \(G(V,E)\) be an undirected finite simple graph. The middle graph \(M(G)\) of \(G\) has the vertex set \(V(G)\cup E(G)\) and two vertices \(x,y\) of \(M(G)\) are adjacent in \(M(G)\) if at least one of them corresponds to an edge \(e\) of \(G\) and the other one is either one of the endvertices of \(e\) in \(G\), or corresponds to an edge \(f\) of \
Xinhui An, Baoyindureng Wu
openaire   +2 more sources

On the bondage number of middle graphs

open access: yesMathematical Notes, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Aytac, A., Turaci, T., Odabas, Z. N.
openaire   +4 more sources

Feature Selection and Combination of Information in the Functional Brain Connectome for Discrimination of Mild Cognitive Impairment and Analyses of Altered Brain Patterns

open access: yesFrontiers in Aging Neuroscience, 2020
Mild cognitive impairment (MCI) is often considered a critical time window for predicting early conversion to Alzheimer’s disease (AD). Brain functional connectome data (i.e., functional connections, global and nodal graph metrics) based on resting-state
Xiaowen Xu   +13 more
doaj   +1 more source

Effects of Alterations in Resting-State Neural Networks on the Severity of Neuropathic Pain after Spinal Cord Injury

open access: yesBioengineering, 2023
Neuropathic pain (NP) following spinal cord injury (SCI) is refractory to pain control strategies, and the underlying neuronal mechanisms remain poorly understood.
Eunhee Park   +6 more
doaj   +1 more source

A numeral system for the middle-levels graphs [PDF]

open access: yesElectronic Journal of Graph Theory and Applications, 2021
The middle-levels graph $M_k ...
openaire   +5 more sources

Graph Algorithm Animation with Grrr [PDF]

open access: yes, 2000
We discuss geometric positioning, highlighting of visited nodes and user defined highlighting that form the algorithm animation facilities in the Grrr graph rewriting programming language. The main purpose of animation was initially for the debugging and
Peter J. Rodgers   +3 more
core   +1 more source

Vertex semi-middle graph of a graph

open access: yesMalaya Journal of Matematik, 2019
In this communication, the vertex semi-middle graph of a graph $M_v(G)$ is introduced. We obtain a characterization of graphs whose $M_v(G)$ is planar, outerplanar and minimally non-outerplanar. Further, we obtain $M_v(G)$ is Eulerian, crossing number one and crossing number two.
null Rajendra Prasad K C   +2 more
openaire   +1 more source

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