Keywords: طیف ضروری; Dirichlet-Laplace problem; Periodic; Non-periodic perturbation; Essential spectrum; Waveguide; Sobolev space;
مقالات ISI طیف ضروری (ترجمه نشده)
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Keywords: طیف ضروری; Polynomial eigenvalue problems; Spectral approximation; Essential spectrum; Relatively compact perturbation;
Keywords: طیف ضروری; 05C50; 15A18; 15A29; 47A10; Inverse spectrum problem; Jacobian method; Infinite graph; Isospectral; Essential spectrum; Approximate unitary equivalence;
Keywords: طیف ضروری; 32A36; 32A37; Hardy-Sobolev space; Multipliers; Spectrum; Essential spectrum;
Keywords: طیف ضروری; Spectral analysis; Essential spectrum; Fredholm; Câ-algebra; Crossed product;
Keywords: طیف ضروری; 35L05; 35P05; 47A56; 47D06; Damped wave equation; Unbounded damping; Essential spectrum; Quadratic operator function with unbounded coefficients; Schrödinger operators with complex potentials;
Keywords: طیف ضروری; singular interactions; molecule; discrete spectrum; essential spectrum; quantum graph;
Keywords: طیف ضروری; Composition operator; Spectrum; Essential spectrum; Hardy space of the upper half-plane; Weighted Bergman spaces of the upper half-plane;
Keywords: طیف ضروری; Essential spectrum; Singular matrix differential operator; Schur complement; Fredholm operator; Approximate inverse; Pseudo-differential operator; Douglis-Nirenberg ellipticity;
Keywords: طیف ضروری; Periodic traveling wave; Aliev–Panfilov model; Eckhaus instability; Oscillating periodic traveling wave; Essential spectrum
Keywords: طیف ضروری; primary; 58C40; secondary; 58J50; Dirac operator; Point spectrum; Essential spectrum;
Keywords: طیف ضروری; Linear relation; Self-adjoint subspace; Perturbation; Essential spectrum
Keywords: طیف ضروری; Spectrum; Perturbation theory; Non-selfadjoint operator; Spectral gap; Resolvent estimate; Essential spectrum
Keywords: طیف ضروری; Fredholm theory; Essential spectrum; Pseudospectra; Limit operator; Band-dominated operator
Keywords: طیف ضروری; primary, 34L05, 47E05; secondary, 34B20Singular linear Hamiltonian system; Essential spectrum; Point spectrum; Defect index
Keywords: طیف ضروری; Magnetic discrete Laplacian; Locally finite graphs; Self-adjointness; Unboundedness; Semi-boundedness; Spectrum; Spectral graph theory; Asymptotic of eigenvalues; Essential spectrum
Keywords: طیف ضروری; Laplacian; Drifted Laplacian; Essential spectrum; Nonnegative Bakry–Émery Ricci curvature
Keywords: طیف ضروری; Infinite graph; Essential spectrum; Perturbation theory; Discrete Laplacian; Pendant; Random graph
Keywords: طیف ضروری; Waveguide; Elasticity; Piezoelectricity; Essential spectrum; Spectral gap; Singular Weyl sequence; ParametrixGuide d'ondes; Élasticité; Piézoélectricité; Spectre essentiel; Troux spectraux; Suite de Weyl; Paramétrix
The essential spectrum of some unbounded Jacobi matrices: A generalization of the Last-Simon approach
Keywords: طیف ضروری; primary; 47B36; secondary; 47A10; 47B25; Jacobi matrix; Essential spectrum; Limit matrix;
Analysis of plasmon resonance on smooth domains using spectral properties of the Neumann–Poincaré operator
Keywords: طیف ضروری; Neumann–Poincaré operator; Symmetrization; Plasmonic resonance; Anomalous localized resonance; Eigenvalues; Essential spectrum
Spectral theory of a class of block Jacobi matrices and applications
Keywords: طیف ضروری; Essential spectrum; Absolutely continuous spectrum; Mourre estimate;
Essential spectra of tensor product Hilbert complexes and the ∂‾-Neumann problem on product manifolds
Keywords: طیف ضروری; 58J10; 58J50; 35N15; 47A13Hilbert complexes; Laplacian; Essential spectrum; Elliptic complexes; ∂‾-Neumann problem; Product manifolds
On the essential spectrum of λ-Toeplitz operators over compact Abelian groups
Keywords: طیف ضروری; Compact Abelian group; Totally ordered group; Toeplitz operators; Weighted composition operators; Essential spectrum;
Instability of periodic traveling wave solutions in a modified FitzHugh-Nagumo model for excitable media
Keywords: طیف ضروری; Periodic traveling wave; Modified FitzHugh-Nagumo model; Eckhaus instability; Excitable media; Essential spectrum;
Multi-way dual Cheeger constants and spectral bounds of graphs
Keywords: طیف ضروری; Cheeger constants; Higher-order dual Cheeger inequalities; Spectral clustering; Markov operators; Essential spectrum;
A Câ algebra of pseudodifferential operators on the half line
Keywords: طیف ضروری; Câ algebras; Singular differential operators; Fredholm operators; Essential spectrum;
On the essential spectrum of magnetic Schrödinger operators in exterior domains
Keywords: طیف ضروری; 81Q10; 35J10; 35P15Spectral theory; Elliptic partial differential equations; Essential spectrum
A class of rotationally symmetric quantum layers of dimension 4
Keywords: طیف ضروری; Discrete spectrum; Essential spectrum; Bound state; Quantum layer;
Stability property and essential spectrum of linear retarded functional differential equations
Keywords: طیف ضروری; 60H15; 60G15; 60H05; Essential spectrum; Weak stability; Asymptotic and exponential stability;
Essential spectra of singular matrix differential operators of mixed order
Keywords: طیف ضروری; 34L05; 34B20; 34L40Matrix differential operator; Essential spectrum; Hamiltonian system; Deficiency index
A singular Sturm–Liouville equation under homogeneous boundary conditions
Keywords: طیف ضروری; Singular Sturm–Liouville; Weighted Sobolev spaces; Essential spectrum
Necessary and sufficient conditions for the regularity and stability of solutions for some partial neutral functional differential equations with infinite delay
Keywords: طیف ضروری; 47D05; 47B40Infinitesimal generators; Hille–Yosida operator; Integrated semigroups; Integral solutions; Strict solutions; Essential spectrum; Uniform fading memory space
Stability and asymptotic behavior of solutions for some linear partial functional differential equations in critical cases
Keywords: طیف ضروری; Hille–Yosida operator; Uniform fading memory space; Semigroup solution; Infinitesimal generator; Characteristic equation; Essential spectrum; Stability
Explicit and almost explicit spectral calculations for diffusion operators
Keywords: طیف ضروری; Spectrum; Essential spectrum; Compact resolvent; Diffusion; Schrödinger operator
Index formulas for countably k-set contractive operators
Keywords: طیف ضروری; 47H09; 47H11Index formula; Countably kk-set contractive operator; Fredholm operator; Essential spectrum; Degree theory
Bifurcation for some non-Fréchet differentiable problems
Keywords: طیف ضروری; Bifurcation; Hadamard differentiable; Essential spectrum
The effects of unequal diffusion coefficients on periodic travelling waves in oscillatory reaction–diffusion systems
Keywords: طیف ضروری; AUTO; Essential spectrum; Wave train; Numerical continuation
Necessary and sufficient conditions for the regularity and stability for some partial functional differential equations with infinite delay
Keywords: طیف ضروری; Hille–Yosida operator; Integrated semigroups; Semigroups; Integral and strict solutions; Uniform fading memory space; Essential spectrum