Results 101 to 110 of about 567,385 (243)
An inverse three spectra problem for Sturm–Liouville operators
Boundary Value Problems, 2018 In this paper, we consider the inverse three spectra problems of recovering the Sturm–Liouville equation by the spectra of the Neumann–Dirichlet boundary value problem on [0,1] $[0,1]$, the Neumann–Robin problem on [0,1/2] $[0,1/2]$, and the Robin ...
Yongxia Guo, Guangsheng Wei, Ruoxia Yao
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IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This study quantifies the impact of internal solitary wave–induced magnetic disturbances on underwater geomagnetic navigation performance in the South China Sea. A physics‐guided volumetric reconstruction framework integrating SWOT altimetry is developed to recover spatiotemporal subsurface magnetic fields.
Zhikuan Pan +6 more
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Multi-interval dissipative Sturm–Liouville boundary-value problems with distributional coefficients
Доповiдi Нацiональної академiї наук УкраїниThe paper investigates spectral properties of multi-interval Sturm–Liouville operators with distributional coefficients. Constructive descriptions of all self-adjoint and maximal dissipative/accumulative extensions in terms of boundary conditions are ...
A.S. Goriunov
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Numerical Simulations of Coupled Solitary Waves With Spatially Modulated Non‐Linearity
Advances in Mathematical Physics, Volume 2026, Issue 1, 2026.This study investigates the dynamics of two coupled solitary waves propagating in media characterised by spatially modulated non‐linearity and variable dispersion. By employing numerical simulations of a system of coupled non‐linear Schrödinger equations (NLSEs) with varying coefficients, we analyse how inhomogeneous physical properties influence ...
Ngaka John Nchejane +2 more
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Stability of kinklike structures in generalized models
Nuclear Physics B, 2020 We study the stability of topological structures in generalized models with a single real scalar field. We show that it is driven by a Sturm-Liouville equation and investigate the conditions that lead to the existence of explicit supersymmetric operators
I. Andrade, M.A. Marques, R. Menezes
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Space versus energy oscillations of Prufer phases for matrix Sturm-Liouville and Jacobi operators
Electronic Journal of Differential Equations, 2020 This note considers Sturm oscillation theory for regular matrix Sturm-Liouville operators on finite intervals and for matrix Jacobi operators. The number of space oscillations of the eigenvalues of the matrix Prufer phases at a given energy, defined ...
Hermann Schulz-Baldes, Liam Urban
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Advances in Difference Equations, 2018 In this study, we consider fractional Sturm–Liouville (S–L) problems within non-singular operators. A fractional S–L problem with exponential and Mittag-Leffler kernels is given with different versions in the Riemann–Liouville and Caputo sense.
Erdal Bas +3 more
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Spectral analysis of singular Sturm-Liouville operators on time scales
Annales Universitatis Mariae Curie-Sklodowska. Sectio A. Mathematica, 2018 In this paper, we consider properties of the spectrum of a Sturm-Liouvilleoperator on time scales. We will prove that the regular symmetricSturm-Liouville operator is semi-bounded from below. We will also give someconditions for the self-adjoint operator
B. Allahverdiev, H. Tuna
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Evolutionary Problems Involving Sturm–Liouville Operators [PDF]
, 2013 The purpose of this paper is to further exemplify an approach to evolutionary problems originally developed in earlier works for a special case and later extended to more general evolutionary problems. We are here concerned with the $(1+1)$ -dimensional evolutionary case, which in a particular case results in a hyperbolic partial differential equation ...
Picard, Rainer, Watson, Bruce
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