Results 31 to 40 of about 345,612 (268)

On two Laplacian matrices for skew gain graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2021
Gain graphs are graphs where the edges are given some orientation and labeled with the elements (called gains) from a group so that gains are inverted when we reverse the direction of the edges.
Roshni T. Roy   +2 more
doaj   +1 more source

A point–plane incidence theorem in matrix rings

open access: yesDiscrete Applied Mathematics, 2022
In this paper, we study a point-hyper plane incidence theorem in matrix rings, which generalizes all previous works in literature of this direction.
The Nguyen, Le Anh Vinh
openaire   +2 more sources

The (16,16,2) designs

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1979
Elementary techniques of algebraic coding theory are here used to discuss the three biplanes with k=6. These three designs are intimately related to the (16,11) extended binary Hamming code and to one another; we systematically investigate these ...
E. F. Assmus, Jr, Chester J. Salwach
doaj   +1 more source

Of the matrics of the equilibrium of the rod formation system based on the principle the duality of the problems of structures mechanics [PDF]

open access: yesMATEC Web of Conferences, 2019
The formation of the equilibrium matrix of the core system in the matrix form is based on the use of the mechanical model of the system obtained by its discretization.
Monakhov Vladimir
doaj   +1 more source

Design of Incidence Matrices With Limited Constellation Expansion in Massive Connectivity NOMA Systems

open access: yesIEEE Access, 2023
Non-orthogonal multiple-access (NOMA) is designed to transmit massive amounts of user communications. The incidence matrix manages the relationship between users and resources. This study focused on increasing user supportability and complexity reduction
Eli Hwang, Xing Hao, Guillermo E. Atkin
doaj   +1 more source

Construction of Structured Random Measurement Matrices in Semi-Tensor Product Compressed Sensing Based on Combinatorial Designs

open access: yesSensors, 2022
A random matrix needs large storage space and is difficult to be implemented in hardware, and a deterministic matrix has large reconstruction error. Aiming at these shortcomings, the objective of this paper is to find an effective method to balance these
Junying Liang   +3 more
doaj   +1 more source

Exploring Auto-Generation of Network Models With Performance Evaluation Process Algebra

open access: yesIEEE Access, 2018
Formal method plays an important role in modeling large scale concurrent networks through its efficient model construction and analysis. Taking urban road networks and public transportation systems as examples, such models can be defined in a formal ...
Jie Ding   +3 more
doaj   +1 more source

Incidence matrices and line graphs of mixed graphs

open access: yesSpecial Matrices, 2023
In the theory of line graphs of undirected graphs, there exists an important theorem linking the incidence matrix of the root graph to the adjacency matrix of its line graph. For directed or mixed graphs, however, there exists no analogous result.
Abudayah Mohammad   +2 more
doaj   +1 more source

Incidence hypergraphs: Injectivity, uniformity, and matrix-tree theorems [PDF]

open access: yesLinear Algebra and its Applications, 2022
An oriented hypergraph is an oriented incidence structure that allows for the generalization of graph theoretic concepts to integer matrices through its locally signed graphic substructure. The locally graphic behaviors are formalized in the subobject classifier of incidence hypergraphs.
Will Grilliette   +2 more
openaire   +3 more sources

Assessment method for identification of electrical connectivity and thermal stability of power grid

open access: yesThe Journal of Engineering, 2019
Primary equipment failure in substation has a significant impact on the reliability of the power supply, and even threatens the thermal stability of power grid.
Yao-Yu Xu   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy