Results 1 to 10 of about 66,959 (230)

Inferring the Eigenvalues and Eigenfunctions Asymptotically for the Eighth Order Boundary Value Problems

open access: yesTikrit Journal of Pure Science, 2022
In the present paper, we consider an eigenvalue problem generated by eight- order differential equations with suitable boundary conditions, that containing a spectral parameter.
Aryan Ali Mohammed, Rebaz Fadhil Mahmood
doaj   +1 more source

Unified definition of stress intensity factors at a sharp three-dimensional jointed corner

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In the manufacture of electronic devices and MEMS, a wide variety of materials are jointed. For light-weight automobiles, CFRP materials are jointed with metallic materials.
Omar IBRAHIM   +2 more
doaj   +1 more source

A comparison between the fourth order linear differential equation with its boundary value problem

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
In this paper, we study a fourth order linear differential equation. We found an upper bound for the solutions of this differential equation and also, we prove that all the solutions are in L4(0, ∞).
Karwan H.F. Jwamer, Rando R. Q. Rasul
doaj   +1 more source

Accurate Estimations of Any Eigenpairs of N-th Order Linear Boundary Value Problems

open access: yesMathematics, 2021
This paper provides a method to bound and calculate any eigenvalues and eigenfunctions of n-th order boundary value problems with sign-regular kernels subject to two-point boundary conditions.
Pedro Almenar, Lucas Jódar
doaj   +1 more source

BOUNDARY VALUE PROBLEM FOR DIFFERENTIAL EQUATION WITH FRACTIONAL ORDER DERIVATIVES WITH DIFFERENT ORIGINS [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2015
We study a spectral problem for an ordinary differential equation with composition of fractional order differentiation operators in Riemann-Liouville and Caputo senses with different origins. We prove that for the problem under study there exist infinite
L.M. Eneeva
doaj   +1 more source

Transient Responses of Repeated Transverse Impacts on Beams

open access: yesApplied Sciences, 2023
In this paper, the eigenfunction expansion method combined with local contact models are presented to analyze the repeated impact behaviors between the sphere and the beam.
Hui Wang   +3 more
doaj   +1 more source

BOUNDARY CONTROL OF ROD TEMPERATURE FIELD WITH A SELECTED POINT

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
In this paper, we study the issue of boundary control of the temperature field of a rod with a selected point. The main purpose of the work is to clarify the conditions for the existence of a boundary control that ensures the transition of the ...
K. B. Imanberdiyev   +3 more
doaj   +1 more source

Unconditional basicity of eigenfunctions’ system of Sturm-Liouville operator with an involutional perturbation

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
In this paper the question on unconditional basicity of the system of eigenfunctions of the involutive perturbed Sturm-Liouville operator is investigated.
A.A. Sarsenbi
doaj   +1 more source

Exact solutions of the radial Schrodinger equation for some physical potentials [PDF]

open access: yes, 2007
By using an ansatz for the eigenfunction, we have obtained the exact analytical solutions of the radial Schrodinger equation for the pseudoharmonic and Kratzer potentials in two dimensions.
A. Chatterjee   +42 more
core   +2 more sources

Inverse Problem for a Fourth-Order Hyperbolic Equation with a Complex-Valued Coefficient

open access: yesMathematics, 2023
This paper studies the existence and uniqueness of the classical solution of inverse problems for a fourth-order hyperbolic equation with a complex-valued coefficient with Dirichlet and Neumann boundary conditions.
Asselkhan Imanbetova   +2 more
doaj   +1 more source

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