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ORCIDSven-Erik Ekström
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2020 – today
- 2024
[j11]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)- 2023
- [i11]Sven-Erik Ekström, David Meadon:
On the eigenvalues of Toeplitz matrices with two off-diagonals. CoRR abs/2305.15107 (2023) - [i10]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 abs/2309.03662 (2023) - [i9]Giovanni Barbarino, Sven-Erik Ekström, Carlo Garoni, David Meadon, Stefano Serra-Capizzano, Paris Vassalos:
Spectral properties of flipped Toeplitz matrices. CoRR abs/2312.06170 (2023) - 2022
- [j10]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): 701-720 (2022) - [j9]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): 1653-1676 (2022) - [j8]Nikos Barakitis, Sven-Erik Ekström, Paris Vassalos:
Preconditioners for fractional diffusion equations based on the spectral symbol. Numer. Linear Algebra Appl. 29(5) (2022) - [i8]Manuel Bogoya, Sven-Erik Ekström, Stefano Serra-Capizzano:
Fast Toeplitz eigenvalue computations, joining interpolation-extrapolation matrix-less algorithms and simple-loop theory. CoRR abs/2201.02024 (2022) - [i7]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 abs/2202.05555 (2022) - [i6]Sven-Erik Ekström, Stefano Serra-Capizzano, Paris Vassalos:
A note on the eigenvalues, singular values, and eigenvectors of Toeplitz and Hankel matrices. CoRR abs/2203.06992 (2022) - 2021
- [i5]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 abs/2108.09086 (2021) - 2020
- [j7]Sven-Erik Ekström, Stefano Serra-Capizzano:
Eigenpairs of some particular band Toeplitz matrices: A comment. Numer. Linear Algebra Appl. 27(1) (2020) - [j6]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): 1546-1570 (2020) - [i4]Sven-Erik Ekström, Carlo Garoni, Adam Jozefiak, Jesse Perla:
Eigenvalues and Eigenvectors of Tau Matrices with Applications to Markov Processes and Economics. CoRR abs/2008.10554 (2020) - [i3]Matthias Bolten, Sven-Erik Ekström, Isabella Furci:
Momentary Symbol: Spectral Analysis of Structured Matrices. CoRR abs/2010.06199 (2020)
2010 – 2019
- 2019
- [j5]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): 819-848 (2019) - [i2]Sven-Erik Ekström, Paris Vassalos:
A Matrix-Less Method to Approximate the Spectrum and the Spectral Function of Toeplitz Matrices with Complex Eigenvalues. CoRR abs/1910.13810 (2019) - [i1]Nikos Barakitis, Sven-Erik Ekström, Paris Vassalos:
Preconditioners for Fractional Diffusion Equations Based on the Spectral Symbol. CoRR abs/1912.13304 (2019) - 2018
- [b1]Sven-Erik Ekström:
Matrix-Less Methods for Computing Eigenvalues of Large Structured Matrices. Uppsala University, Sweden, 2018 - [j4]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): 478-487 (2018) - [j3]Fayyaz Ahmad, Eman Salem 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): 867-893 (2018) - [j2]Sven-Erik Ekström, Stefano Serra-Capizzano:
Eigenvalues and eigenvectors of banded Toeplitz matrices and the related symbols. Numer. Linear Algebra Appl. 25(5) (2018) - [j1]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)
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