Results 11 to 20 of about 7,103 (240)
Concentration of symmetric eigenfunctions [PDF]
Nonlinear Analysis: Theory, Methods & Applications, 2010 8 ...
Azagra, Daniel, Macia Lang, Fabricio
openaire +4 more sources
Қарағанды 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
Eigenfunction Data for Over-reflection
, 2022 This dataset contains the computation of eigenfunction in figure 8 and figure 9 in the paper "Over-reflection of acoustic waves by supersonic exponential boundary layer flows".
Görtz, Simon +2 more
core +1 more source
Inverse Problem for a Fourth-Order Hyperbolic Equation with a Complex-Valued Coefficient
Mathematics, 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
An Assessment of High-Order-Mode Analysis and Shape Optimization of Expansion Chamber Mufflers
Archives of Acoustics, 2014 A substantial quantity of research on muffler design has been restricted to a low frequency range using the plane wave theory. Based on this theory, which is a one-dimensional wave, no higher order wave has been considered.
Min-Chie CHIU, Ying-Chun CHANG
doaj +1 more source
Eigenfunction Families and Solution Bounds for Multiplicatively Advanced Differential Equations
Axioms, 2020 A family of Schwartz functions W ( t ) are interpreted as eigensolutions of MADEs in the sense that W ( δ ) ( t ) = E W ( q γ t ) where the eigenvalue E ∈ R is independent of the advancing parameter q > 1 .
David W. Pravica +2 more
doaj +1 more source
Axioms, 2022 This article discusses the author’s version of the technology for solving a one-dimensional boundary value problem for a one-dimensional advection–diffusion equation based on the method of separation of variables, as well as the theory of eigenvalues and
Temirkhan Aleroev, Victor Orlov
doaj +1 more source
Effective decoupling method for derivation of eigenfunctions for closed cylindrical shell
Mechanics and Advanced Technologies, 2023 By expansion into Fourier series along the circumferential coordinate, the problem for elastic thin-walled closed cylindrical shell is reduced to 8th order differential equation with respect to axial coordinate.
Hlib Yudin, Igor Orynyak
doaj +1 more source
Existence of Nonnegative Solutions of Linear Autonomous Functional Differential Equations
Mathematics, 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
Vibrating systems with heavy soft inclusions (in Ukrainian) [PDF]
Математичні Студії, 2012 The Neumann spectral problem for an elliptic operator of the second order with singularly perturbed coefficients is considered. The asymptotic behavior of eigenvalues and eigenfunctions is studied.
V. M. Hut
doaj