Sven-Erik Ekström

Publication Activity (10 Years)

Years Active: 2018-2024
Publications (10 Years): 22

Top Topics

Singular Values

Eigenvalues And Eigenvectors

Spectral Analysis

Top Venues

Numer. Linear Algebra Appl.

Numer. Algorithms

SIAM J. Matrix Anal. Appl.

Publications

Manuel Bogoya, Sven-Erik Ekström, Stefano Serra-Capizzano, Paris Vassalos
Matrix-less methods for the spectral approximation of large non-Hermitian Toeplitz matrices: A concise theoretical analysis and a numerical study. Numer. Linear Algebra Appl. 31 (4) (2024)
Giovanni Barbarino, Sven-Erik Ekström, Carlo Garoni, David Meadon, Stefano Serra Capizzano, Paris Vassalos
From asymptotic distribution and vague convergence to uniform convergence, with numerical applications. CoRR (2023)
Giovanni Barbarino, Sven-Erik Ekström, Carlo Garoni, David Meadon, Stefano Serra Capizzano, Paris Vassalos
Spectral properties of flipped Toeplitz matrices. CoRR (2023)
Sven-Erik Ekström, David Meadon
On the eigenvalues of Toeplitz matrices with two off-diagonals. CoRR (2023)
Matthias Bolten, Sven-Erik Ekström, Isabella Furci, Stefano Serra Capizzano
A note on the spectral analysis of matrix sequences via GLT momentary symbols: from all-at-once solution of parabolic problems to distributed fractional order matrices. CoRR (2022)
Sven-Erik Ekström, Paris Vassalos
A matrix-less method to approximate the spectrum and the spectral function of Toeplitz matrices with real eigenvalues. Numer. Algorithms 89 (2) (2022)
Manuel Bogoya, Sven-Erik Ekström, Stefano Serra Capizzano
Fast Toeplitz eigenvalue computations, joining interpolation-extrapolation matrix-less algorithms and simple-loop theory. Numer. Algorithms 91 (4) (2022)
M. Bogoya, Sven-Erik Ekström, Stefano Serra Capizzano
Fast Toeplitz eigenvalue computations, joining interpolation-extrapolation matrix-less algorithms and simple-loop theory. CoRR (2022)
Nikos Barakitis, Sven-Erik Ekström, Paris Vassalos
Preconditioners for fractional diffusion equations based on the spectral symbol. Numer. Linear Algebra Appl. 29 (5) (2022)
Sven-Erik Ekström, Stefano Serra Capizzano, Paris Vassalos
A note on the eigenvalues, singular values, and eigenvectors of Toeplitz and Hankel matrices. CoRR (2022)
Armando Coco, Sven-Erik Ekström, Giovanni Russo, Stefano Serra Capizzano, Santina Chiara Stissi
Spectral and norm estimates for matrix sequences arising from a finite difference approximation of elliptic operators. CoRR (2021)
Matthias Bolten, Sven-Erik Ekström, Isabella Furci
Momentary Symbol: Spectral Analysis of Structured Matrices. CoRR (2020)
Minghua Chen, Sven-Erik Ekström, Stefano Serra Capizzano
A Multigrid Method for Nonlocal Problems: Non-Diagonally Dominant or Toeplitz-Plus-Tridiagonal Systems. SIAM J. Matrix Anal. Appl. 41 (4) (2020)
Sven-Erik Ekström, Stefano Serra Capizzano
Eigenpairs of some particular band Toeplitz matrices: A comment. Numer. Linear Algebra Appl. 27 (1) (2020)
Sven-Erik Ekström, Carlo Garoni, Adam Jozefiak, Jesse Perla
Eigenvalues and Eigenvectors of Tau Matrices with Applications to Markov Processes and Economics. CoRR (2020)
Sven-Erik Ekström, Carlo Garoni
A matrix-less and parallel interpolation-extrapolation algorithm for computing the eigenvalues of preconditioned banded symmetric Toeplitz matrices. Numer. Algorithms 80 (3) (2019)
Nikos Barakitis, Sven-Erik Ekström, Paris Vassalos
Preconditioners for Fractional Diffusion Equations Based on the Spectral Symbol. CoRR (2019)
Sven-Erik Ekström, Paris Vassalos
A Matrix-Less Method to Approximate the Spectrum and the Spectral Function of Toeplitz Matrices with Complex Eigenvalues. CoRR (2019)
Sven-Erik Ekström, Stefano Serra Capizzano
Eigenvalues and eigenvectors of banded Toeplitz matrices and the related symbols. Numer. Linear Algebra Appl. 25 (5) (2018)
Fayyaz Ahmad, Eman S. Alaidarous, Dina Abdullah Alrehaili, Sven-Erik Ekström, Isabella Furci, Stefano Serra Capizzano
Are the eigenvalues of preconditioned banded symmetric Toeplitz matrices known in almost closed form? Numer. Algorithms 78 (3) (2018)
Sven-Erik Ekström, Isabella Furci, Carlo Garoni, Carla Manni, Stefano Serra Capizzano, Hendrik Speleers
Are the eigenvalues of the B-spline isogeometric analysis approximation of -Δu = λu known in almost closed form? Numer. Linear Algebra Appl. 25 (5) (2018)
Sven-Erik Ekström, Carlo Garoni, Stefano Serra Capizzano
Are the Eigenvalues of Banded Symmetric Toeplitz Matrices Known in Almost Closed Form? Exp. Math. 27 (4) (2018)