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Clustering Powers of Sparse Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2020
We prove that if $G$ is a sparse graph — it belongs to a fixed class of bounded expansion $\mathcal{C}$ — and $d\in \mathbb{N}$ is fixed, then the $d$th power of $G$ can be partitioned into cliques so that contracting each of these clique to a single vertex again yields a sparse graph.
Nešetřil, Jaroslav   +3 more
openaire   +3 more sources

Towards sparse matrix operations: graph database approach for power grid computation

open access: yesGlobal Energy Interconnection, 2023
The construction of new power systems presents higher requirements for the Power Internet of Things (PIoT) technology. The “source-grid-load-storage” architecture of a new power system requires PIoT to have a stronger multi- source heterogeneous data ...
Daoxing Li   +4 more
doaj   +1 more source

THE POWER GRAPH REPRESENTATION FOR INTEGER MODULO GROUP WITH POWER PRIME ORDER

open access: yesBAREKENG JURNAL ILMU MATEMATIKA DAN TERAPAN, 2023
There are many applications of graphs in various fields. Starting from chemical problems, such as the molecular shape of a compound to internet network problems, we can also use graphs to depict the abstract concept of a mathematical structure..
Lalu Riski   +6 more
semanticscholar   +1 more source

Power Flow Balancing With Decentralized Graph Neural Networks [PDF]

open access: yesIEEE Transactions on Power Systems, 2021
We propose an end-to-end framework based on a Graph Neural Network (GNN) to balance the power flows in energy grids. The balancing is framed as a supervised vertex regression task, where the GNN is trained to predict the current and power injections at ...
Jonas Berg Hansen   +2 more
semanticscholar   +1 more source

Powers of chordal graphs [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1983
AbstractAn undirected simple graph G is called chordal if every circle of G of length greater than 3 has a chord. For a chordal graph G, we prove the following: (i) If m is an odd positive integer, Gm is chordal. (ii) If m is an even positive integer and if Gm is not chordal, then none of the edges of any chordless cycle of Gm is an edge of Gr, r < ...
R. Balakrishnan, P. Paulraja
openaire   +2 more sources

Power Domination in the Generalized Petersen Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2020
The problem of monitoring an electric power system by placing as few measurement devices in the system can be formulated as a power dominating set problem in graph theory.
Zhao Min, Shan Erfang, Kang Liying
doaj   +1 more source

Power Domination Number On Shackle Operation with Points as Lingkage

open access: yesJTAM (Jurnal Teori dan Aplikasi Matematika), 2020
The Power dominating set is a minimum point of determination in a graph that can dominate the connected dots around it, with a minimum domination point.
Ilham Saifudin
doaj   +1 more source

A survey on the development status and application prospects of knowledge graph in smart grids

open access: yesIET Generation, Transmission & Distribution, 2021
With the advent of the electric power big data era, semantic interoperability and interconnection of power data have received extensive attention. Knowledge graph technology is a new method describing the complex relationships between concepts and ...
Jian Wang, Xi Wang, Chaoqun Ma, Lei Kou
doaj   +1 more source

The First Zagreb Index, The Wiener Index, and The Gutman Index of The Power of Dihedral Group

open access: yesCauchy: Jurnal Matematika Murni dan Aplikasi, 2023
Research on graphs combined with groups is an interesting topic in the field of combinatoric algebra where graphs are used to represent a group. One type of graph representation of a group is a power graph.
Evi Yuniartika Asmarani   +5 more
doaj   +1 more source

Mode Entanglement and Entangling power in Bosonic Graphs [PDF]

open access: yes, 2003
We analyze the quantum entanglement properties of bosonic particles hopping over graph structures.Mode-entanglement of a graph vertex with respect the rest of the graph is generated, starting from a product state, by turning on for a finite time a ...
Giorda, Paolo, Zanardi, Paolo
core   +1 more source

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