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Eliminants of Characteristic Equations [PDF]

open access: bronzeProceedings of the London Mathematical Society, 1932
R. S. Wilson
openalex   +2 more sources

Extremal values of differential equations with application to control systems [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2021
In the paper, maximal values xe(τ) of the solutions x(t) of the linear differential equations excited by the Dirac delta function are determined. The analytical solutions of the equations and also the maximal positive values of these solutions are ...
Henryk Górecki, Mieczysław Zaczyk
doaj   +1 more source

Damage Detection of Axially Loaded Beam: A Frequency-Based Method [PDF]

open access: yesCivil Engineering Infrastructures Journal, 2016
The present study utilizes an analytical method to formulate the three lowest modal frequencies of axially-loaded notched beam through both crack location and load level in a specific format that can be used in existing frequency-based crack ...
Omid Rezaifar   +1 more
doaj   +1 more source

Uniform boundedness of solutions to linear difference equations with periodic forcing functions

open access: yesAIMS Mathematics, 2023
In this paper we give criteria on the uniform boundedness of the solutions to linear difference equations (LEs) with periodic forcing functions. First, we give a necessary and sufficient condition that the sequence $ \{L^n\} $ of a square matrix $ L $ is
Rinko Miyazaki   +2 more
doaj   +1 more source

Explicit characteristic equations for integral operators arising from well-posed boundary value problems of finite beam deflection on elastic foundation

open access: yesAIMS Mathematics, 2021
Characteristic equations for the whole class of integral operators arising from arbitrary well-posed two-point boundary value problems of finite beam deflection resting on elastic foundation are obtained in terms of 4×4 matrices in block-diagonal form ...
Sung Woo Choi
doaj   +1 more source

Fundamental boundary matrices for 36 elementary boundary value problems of finite beam deflection on elastic foundation

open access: yesMathematical Biosciences and Engineering, 2023
We consider the boundary value problem of finite beam deflection on elastic foundation with two point boundary conditions of the form $ u^{(p)}(-l) = u^{(q)}(-l) = u^{(r)}(l) = u^{(s)}(l) = 0 $, $ p < q $, $ r < s $, which we call elementary.
Sung Woo Choi
doaj   +1 more source

Existence of Nonnegative Solutions of Linear Autonomous Functional Differential Equations

open access: yesMathematics, 2020
It is shown that if we exclude the existence of nontrivial small solutions, then a linear autonomous functional differential equation has a nontrivial nonnegative solution if and only if it has a nonnegative eigenfunction.
Mihály Pituk
doaj   +1 more source

On the Characteristic Polynomial of the Generalized k-Distance Tribonacci Sequences

open access: yesMathematics, 2020
In 2008, I. Włoch introduced a new generalization of Pell numbers. She used special initial conditions so that this sequence describes the total number of special families of subsets of the set of n integers.
Pavel Trojovský
doaj   +1 more source

Fourth order computational spline method for two-parameter singularly perturbed boundary value problem

open access: yesInternational Journal of Applied Mechanics and Engineering, 2023
The current research work considers a two-parameter singularly perturbed two-point boundary value problem. Here, we suggest a computational scheme derived by using an exponential spline for the numerical solution of the problem on a uniform mesh.
Satyanarayana KAMBAMPATI   +3 more
doaj   +1 more source

Matrix Analysis of Synchronous Boolean Networks [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2021
The synchronous Boolean network (SBN) is a simple and powerful model for describing, analyzing, and simulating cellular biological networks. This paper seeks a complete understanding of the dynamics of such a model by employing a matrix method that ...
Ali Muhammad Ali Rushdi   +1 more
doaj   +1 more source

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