Results 21 to 30 of about 331,401 (269)

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

On some regular and singular problems of Birkhoff interpolation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
Here we investigate the pure (0,1,…,r−2,r)-interpolation problem on the zeros of (1−x2)Pn(α)(x)=(1−x2)Pn(α,α)(x), α>−1, where Pn(α,α)(x) is the Jacobi polynomial of degree n with β=α.
N. Jhunjhunwala, J. Prasad
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

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

Generalized inverses in graph theory

open access: yesAKCE International Journal of Graphs and Combinatorics, 2023
–In this article, some interesting applications of generalized inverses in the graph theory are revisited. Interesting properties of generalized inverses are employed to make the proof of several known results simpler, and several techniques such as ...
Umashankara Kelathaya   +2 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

General Randić matrix and general Randić incidence matrix

open access: yesDiscrete Applied Mathematics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ruifang Liu, Wai Chee Shiu
openaire   +2 more sources

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

Spectral Applications of Vertex-Clique Incidence Matrices Associated with a Graph

open access: yesMathematics, 2023
Using the notions of clique partitions and edge clique covers of graphs, we consider the corresponding incidence structures. This connection furnishes lower bounds on the negative eigenvalues and their multiplicities associated with the adjacency matrix,
Shaun Fallat, Seyed Ahmad Mojallal
doaj   +1 more source

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