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228 papers in math.SP · page 5
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Gravito-inertial waves concentrate energy on fluid boundaries
On gravito-inertial surface waves
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Algebraic identity unifies sharp Hardy inequalities across geometries
A unified approach to $L^p$ Hardy and Rellich-type inequalities in Euclidean and non-Euclidean settings
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Spectral expansions learn DEs on unbounded domains without grids
A Spectral Approach for Learning Spatiotemporal Neural Differential Equations
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Second wave-trace coefficient derived for stationary spacetimes
Heat and Wave kernel expansions for stationary spacetimes
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Dirac systems recovered from spectral functions
Dirac systems with locally square-integrable potentials: direct and inverse problems for the spectral functions
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GRH yields explicit spectral gap for Schottky surface covers
Explicit spectral gap for Hecke congruence covers of arithmetic Schottky surfaces
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Barrier nonsubordinacy ensures absolute continuity for block Jacobi spectra
Barrier nonsubordinacy and absolutely continuous spectrum of block Jacobi matrices
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Anderson Hamiltonians defined for singular potentials
Anderson Hamiltonians with singular potentials
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Weyl functions for matrix systems obey new high-energy identity
Generalised canonical systems related to matrix string equations: corresponding structured operators and high-energy asymptotics of the Weyl functions
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Spectral mapping theorems extend to scalar type operators
On spectral inclusion and mapping theorems for scalar type spectral operators and semigroups
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ℓ¹-cospectrality computed for K_n
$\ell^1$-Cospectrality of graphs
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Boundary switches boost cavity transmission at fixed frequency
Wave Enhancement through Optimization of Boundary Conditions
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Moments determine inverse data for Jacobi-linked system
Dynamic inverse problem for special system associated with Jacobi matrices and classical moment problems
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Essential numerical range detects spectral pollution in unbounded approximations
The essential numerical range for unbounded linear operators
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Random point interactions localize or stay absolutely continuous
Random Hamiltonians with Arbitrary Point Interactions
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GRAMPA recovers exact matchings in correlated ER graphs
Spectral Graph Matching and Regularized Quadratic Relaxations II: Erd\H{o}s-R\'enyi Graphs and Universality
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GRAMPA recovers exact graph matchings at noise level 1/log n
Spectral Graph Matching and Regularized Quadratic Relaxations I: The Gaussian Model
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Riesz means bound spectral expansions of Schrödinger distributions in negative Sobolev
Localization Principle of the Spectral Expansions of Distributions Connected with Schrodinger Operator
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Explicit solutions constructed for matrix dispersionless equations
GBDT and explicit solutions for the matrix coupled dispersionless equations (local and nonlocal cases)
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Fractional Laplacian eigenfunctions have interior estimates
Interior estimates for the eigenfunctions of the fractional Laplacian on a bounded Euclidean domain
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One concept unifies D-stability and diagonal stability notions
Unifying matrix stability concepts with a view to applications
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Schmidt subspaces of Hankel operators are model-space images
The structure of Schmidt subspaces of Hankel operators: a short proof
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Plate eigenvalues approach Robin Laplacian as compression grows
On the behaviour of clamped plates under large compression
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Boundary integral equations compute eigenvalues for delta interactions
Boundary integral formulations of eigenvalue problems for elliptic differential operators with singular interactions and their numerical approximation by boundary element methods
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Annuli obey two-term Weyl law with O(μ^{2/3}) remainder
The Weyl formula for planar annuli
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Birkhoff normal form yields sqrt(h) eigenvalue expansions for magnetic wells
A semiclassical Birkhoff normal form for symplectic magnetic wells
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Resonances approach scattering zeros and -2π/3 ray as field vanishes
Resonances in the one dimensional Stark effect in the limit of small field
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Entropy integral equals coefficient integral in Arov gauge
Szeg\H{o}'s Theorem for Canonical Systems: the Arov Gauge and a Sum Rule
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Biharmonic Neumann eigenvalues bounded compatibly with Weyl law
Neumann eigenvalues of the biharmonic operator on domains: geometric bounds and related results
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Exact formula predicts error energy in quantized CS
Quantization in Compressive Sensing: A Signal Processing Approach
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L^q sphere constraint generalizes Dirichlet eigenvalues
An overview on constrained critical points of Dirichlet integrals
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Fermi's golden rule extends to higher-order hyperbolic eigenvalue shifts
Higher order deformations of hyperbolic spectra
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Hankel matrix eigenvalues reduce to explicit polynomial roots
Spectral properties of anti-heptadiagonal persymmetric Hankel matrices
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Brjuno-Rüssmann function sets deviation scale for Jacobi determinants
Large Deviation theorems for Dirichlet determinants of analytic quasi-periodic Jacobi operators with Brjuno-R\"ussmann frequency
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Neumann eigenvalue count below first Dirichlet tied to isoperimetric ratio
Isoperimetric relations between Dirichlet and Neumann eigenvalues
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Abstract theorem covers non-self-adjoint Laplace perturbations
Correct Singular Perturbations of the Laplace Operator with the Spectrum of the Unperturbed Operator