Sven-Erik Ekström
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Are the eigenvalues of banded symmetric Toeplitz matrices known in almost closed form?
SE Ekström, C Garoni, S Serra-Capizzano
Experimental Mathematics 27 (4), 478-487, 2018
Symbol-based analysis of finite element and isogeometric B-spline discretizations of eigenvalue problems: Exposition and review
C Garoni, H Speleers, SE Ekström, A Reali, S Serra-Capizzano, ...
Archives of Computational Methods in Engineering 26 (5), 1639-1690, 2019
A matrix-less and parallel interpolation–extrapolation algorithm for computing the eigenvalues of preconditioned banded symmetric Toeplitz matrices
SE Ekström, C Garoni
Numerical Algorithms 80 (3), 819-848, 2018
Are the eigenvalues of the B‐spline isogeometric analysis approximation of Δu=λu known in almost closed form?
SE Ekström, I Furci, C Garoni, C Manni, S Serra‐Capizzano, H Speleers
Numerical Linear Algebra with Applications 25 (5), e2198, 2018
Eigenvalues and eigenvectors of banded Toeplitz matrices and the related symbols
SE Ekström, S Serra‐Capizzano
Numerical Linear Algebra with Applications 25 (5), e2137, 2018
Exact formulae and matrix-less eigensolvers for block banded symmetric Toeplitz matrices
SE Ekström, I Furci, S Serra-Capizzano
BIT Numerical Mathematics 58 (4), 937-968, 2018
Are the eigenvalues of preconditioned banded symmetric Toeplitz matrices known in almost closed form?
F Ahmad, ES Al-Aidarous, DA Alrehaili, SE Ekström, I Furci, ...
Numerical Algorithms 78 (3), 867-893, 2018
Preconditioners for Fractional Diffusion Equations Based on the Spectral Symbol
N Barakitis, SE Ekström, P Vassalos
Numercial Linear Algebra with Applications, e2441, 2022
A discontinuous Galerkin extension of the vertex-centered edge-based finite volume method
M Berggren, SE Ekström, J Nordström
Communications in Computational Physics 5, 456-468, 2009
Matrix-less methods for computing eigenvalues of large structured matrices
SE Ekström
Acta Universitatis Upsaliensis, 2018
A matrix-less method to approximate the spectrum and the spectral function of Toeplitz matrices with real eigenvalues
SE Ekström, P Vassalos
Numerical Algorithms 89 (2), 701-720, 2022
Eigenvalues and eigenvectors of tau matrices with applications to Markov processes and economics
SE Ekström, C Garoni, A Jozefiak, J Perla
Linear Algebra and its Applications 627, 41-71, 2021
A Multigrid Method for Nonlocal Problems: Non--Diagonally Dominant or Toeplitz-Plus-Tridiagonal Systems
M Chen, SE Ekström, S Serra-Capizzano
SIAM Journal on Matrix Analysis and Applications 41 (4), 1546-1570, 2020
Fast Toeplitz eigenvalue computations, joining interpolation-extrapolation matrix-less algorithms and simple-loop theory
M Bogoya, SE Ekström, S Serra-Capizzano
Numerical Algorithms 91 (4), 1653-1676, 2022
Toeplitz momentary symbols: Definition, results, and limitations in the spectral analysis of structured matrices
M Bolten, SE Ekström, I Furci, S Serra-Capizzano
Linear Algebra and its Applications, 2022
Matrix-less methods for the spectral approximation of large non-Hermitian Toeplitz matrices: a numerical study
M Bogoya, SE Ekström, S Serra-Capizzano, P Vassalos
Approximating the perfect sampling grids for computing the eigenvalues of toeplitz-like matrices using the spectral symbol
SE Ekström
arXiv preprint arXiv:1901.06917, 2019
Matrix-less eigensolver for large structured matrices
G Barbarino, M Claesson, SE Ekström, C Garoni, D Meadon, H Speleers
Department of Information Technology, Uppsala University,-, Aug, 2021
Eigenvalue isogeometric approximations based on B-splines: tools and results
SE Ekström, S Serra-Capizzano
Advanced Methods for Geometric Modeling and Numerical Simulation, 57-76, 2019
Incorporating a discontinuous Galerkin method into the existing vertex-centered edge-based finite volume solver Edge
SE Ekström, M Berggren
ADIGMA-A European Initiative on the Development of Adaptive Higher-Order …, 2010
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