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 | 69 | 2019 |
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 | 65 | 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 | 39 | 2018 |
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 | 39 | 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 | 29 | 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 | 28 | 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 | 27 | 2018 |
Preconditioners for Fractional Diffusion Equations Based on the Spectral Symbol N Barakitis, SE Ekström, P Vassalos Numercial Linear Algebra with Applications, e2441, 2022 | 22 | 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 | 13 | 2009 |
Matrix-less methods for computing eigenvalues of large structured matrices SE Ekström Acta Universitatis Upsaliensis, 2018 | 12 | 2018 |
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 | 10 | 2022 |
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 | 8 | 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 | 8 | 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 | 7 | 2020 |
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 | 6* | 2022 |
Matrix-less methods for the spectral approximation of large non-Hermitian Toeplitz matrices: A concise theoretical analysis and a numerical study M Bogoya, SE Ekström, S Serra, P Vassalos Numerical Linear Algebra with Applications, 2024 | 5* | 2024 |
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 | 4 | 2019 |
From asymptotic distribution and vague convergence to uniform convergence, with numerical applications G Barbarino, SE Ekström, C Garoni, D Meadon, S Serra-Capizzano, ... arXiv preprint arXiv:2309.03662, 2023 | 3 | 2023 |
Spectral and norm estimates for matrix-sequences arising from a finite difference approximation of elliptic operators A Coco, SE Ekström, G Russo, S Serra-Capizzano, SC Stissi Linear Algebra and its Applications 667, 10-43, 2023 | 3 | 2023 |
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 M Bolten, SE Ekström, I Furci, S Serra-Capizzano Electronic Transactions on Numerical Analysis 58, 136-163, 2023 | 2 | 2023 |