Results 31 to 40 of about 1,282,116 (277)

Classical and Quantum Cosmology of Multigravity [PDF]

open access: yes, 2010
Recently, a multigraviton theory on a simple closed circuit graph corresponding to the discretization of $S^1$ compactification of the Kaluza-Klein (KK) theory has been considered.
Bizdadea C   +13 more
core   +2 more sources

THE INTERSECTION GRAPH REPRESENTATION OF A DIHEDRAL GROUP WITH PRIME ORDER AND ITS NUMERICAL INVARIANTS

open access: yesBarekeng, 2022
One of the concepts in mathematics that developing rapidly today is Graph Theory. The development of Graph Theory has been combined with Group Theory, that is by representing a group in a graph.
Dewi Santri Ramdani   +2 more
doaj   +1 more source

Pattern vectors from algebraic graph theory [PDF]

open access: yes, 2005
Graphstructures have proven computationally cumbersome for pattern analysis. The reason for this is that, before graphs can be converted to pattern vectors, correspondences must be established between the nodes of structures which are potentially of ...
Bin Luo   +3 more
core   +4 more sources

On Total H-Irregularity Strength of the Disjoint Union of Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2020
A simple graph G admits an H-covering if every edge in E(G) belongs to at least to one subgraph of G isomorphic to a given graph H. For the subgraph H ⊆ G under a total k-labeling we define the associated H-weight as the sum of labels of all vertices and
Ashraf Faraha   +5 more
doaj   +1 more source

Exploring the Power of Graph Theory in Hadron Theory: From Bound States to Quark Systems

open access: yesIndonesian Journal of Combinatorics, 2023
The article discusses how graph theory has been utilized in hadron theory for high energy interactions in recent years. The paper emphasizes the significance of a visual perspective throughout the discussion and explores how graph theory can aid in ...
M. Abu-shady
doaj   +1 more source

On the Ideal Theory of Graphs

open access: yesJournal of Algebra, 1994
If \(k\) is a field and \(G\) is a graph on a vertex set \(\{v_ 1, \dots, v_ n\}\), then the edge ideal \(I = I(G) \subset R = k[x_ 1, \dots, x_ n]\) is generated by all \(x_ ix_ j\) such that \(v_ iv_ j\) is an edge of \(G\). We shall assume there are no edges of type \(v_ iv_ i\), so \(I\) is square-free and \(R/I\) is a special case of a face ring ...
Simis, Aron   +2 more
openaire   +2 more sources

The approach to criticality in sandpiles [PDF]

open access: yes, 2010
A popular theory of self-organized criticality relates the critical behavior of driven dissipative systems to that of systems with conservation. In particular, this theory predicts that the stationary density of the abelian sandpile model should be equal
A. A. Járai   +8 more
core   +4 more sources

Graph Theory: A Lost Component For Development in Nigeria

open access: yesJournal of Nigerian Society of Physical Sciences, 2022
Graph theory is one of the neglected branches of mathematics in Nigeria but with the most applications in other fields of research. This article shows the paucity, importance, and necessity of graph theory in the development of Nigeria.
Olayiwola Babarinsa
doaj   +1 more source

Sampling and Reconstruction of Sparse Signals on Circulant Graphs - An Introduction to Graph-FRI

open access: yes, 2017
With the objective of employing graphs toward a more generalized theory of signal processing, we present a novel sampling framework for (wavelet-)sparse signals defined on circulant graphs which extends basic properties of Finite Rate of Innovation (FRI)
Dragotti, Pier Luigi   +1 more
core   +1 more source

On the Beta-Number of Forests with Isomorphic Components

open access: yesDiscussiones Mathematicae Graph Theory, 2018
The beta-number, β (G), of a graph G is defined to be either the smallest positive integer n for which there exists an injective function f : V (G) → {0, 1, . . .
Ichishima Rikio   +3 more
doaj   +1 more source

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