Barbarino, Giovanni; Claesson, Melker; Ekström, Sven-Erik; Garoni, Carlo; Meadon, David; Speleers, Hendrik Matrix-less spectral approximation for large structured matrices. (English) Zbl 07964458 BIT 65, No. 1, Paper No. 2, 35 p. (2025). MSC: 65F15 15A18 × Cite Format Result Cite Review PDF Full Text: DOI
Bolten, Matthias; Ekström, Sven-Erik; Furci, Isabella; Serra-Capizzano, Stefano 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. (English) Zbl 1516.15005 ETNA, Electron. Trans. Numer. Anal. 58, 136-163 (2023). MSC: 15A18 15B05 34L20 65N22 35R11 × Cite Format Result Cite Review PDF Full Text: DOI arXiv Link
Bogoya, Manuel; Ekström, Sven-Erik; Serra-Capizzano, Stefano Fast Toeplitz eigenvalue computations, joining interpolation-extrapolation matrix-less algorithms and simple-loop theory. (English) Zbl 1503.15040 Numer. Algorithms 91, No. 4, 1653-1676 (2022). Reviewer: Anton Iliev (Plovdiv) MSC: 15B05 65F15 65D05 47B35 15A18 41A60 × Cite Format Result Cite Review PDF Full Text: DOI arXiv
Bolten, Matthias; Ekström, Sven-Erik; Furci, Isabella; Serra-Capizzano, Stefano Toeplitz momentary symbols: definition, results, and limitations in the spectral analysis of structured matrices. (English) Zbl 1493.15035 Linear Algebra Appl. 651, 51-82 (2022). MSC: 15A18 15B05 65F15 × Cite Format Result Cite Review PDF Full Text: DOI arXiv
Ekström, Sven-Erik; Vassalos, Paris A matrix-less method to approximate the spectrum and the spectral function of Toeplitz matrices with real eigenvalues. (English) Zbl 1480.65102 Numer. Algorithms 89, No. 2, 701-720 (2022). MSC: 65F60 15B05 × Cite Format Result Cite Review PDF Full Text: DOI arXiv
Ekström, Sven-Erik; Garoni, Carlo; Jozefiak, Adam; Perla, Jesse Eigenvalues and eigenvectors of tau matrices with applications to Markov processes and economics. (English) Zbl 1471.15004 Linear Algebra Appl. 627, 41-71 (2021). Reviewer: George Stoica (Saint John) MSC: 15A18 15A30 15B05 60K25 60G50 60J60 91G10 × Cite Format Result Cite Review PDF Full Text: DOI arXiv
Ekström, Sven-Erik; Serra-Capizzano, Stefano Reply to letter to the editor: Eigenpairs of some particular band Toeplitz matrices: a comment: reply from authors. (English) Zbl 1463.65070 Numer. Linear Algebra Appl. 27, No. 1, e2273, 3 p. (2020). MSC: 65F15 15B05 × Cite Format Result Cite Review PDF Full Text: DOI
Ekström, Sven-Erik; Garoni, Carlo A matrix-less and parallel interpolation-extrapolation algorithm for computing the eigenvalues of preconditioned banded symmetric Toeplitz matrices. (English) Zbl 1455.65051 Numer. Algorithms 80, No. 3, 819-848 (2019). MSC: 65F15 15B05 65D05 65B05 × Cite Format Result Cite Review PDF Full Text: DOI
Ekström, Sven-Erik; Garoni, Carlo; Serra-Capizzano, Stefano Are the eigenvalues of banded symmetric Toeplitz matrices known in almost closed form? (English) Zbl 1405.15037 Exp. Math. 27, No. 4, 478-487 (2018). MSC: 15B05 65F15 65D05 65B05 × Cite Format Result Cite Review PDF Full Text: DOI Link
Ekström, Sven-Erik; Furci, Isabella; Serra-Capizzano, Stefano Exact formulae and matrix-less eigensolvers for block banded symmetric Toeplitz matrices. (English) Zbl 1405.65051 BIT 58, No. 4, 937-968 (2018). Reviewer: Giovanni Barbarino (Pisa) MSC: 65F15 15B05 65B05 × Cite Format Result Cite Review PDF Full Text: DOI
Ekström, Sven-Erik; Furci, Isabella; Garoni, Carlo; Manni, Carla; Serra-Capizzano, Stefano; Speleers, Hendrik Are the eigenvalues of the B-spline isogeometric analysis approximation of \(-\Delta u=\lambda u\) known in almost closed form? (English) Zbl 1513.65454 Numer. Linear Algebra Appl. 25, No. 5, e2198, 34 p. (2018). MSC: 65N25 65N30 65D07 65F15 65D05 65B05 15B05 35C20 65Y05 × Cite Format Result Cite Review PDF Full Text: DOI
Ekström, S.-E.; Serra-Capizzano, S. Eigenvalues and eigenvectors of banded Toeplitz matrices and the related symbols. (English) Zbl 1513.65095 Numer. Linear Algebra Appl. 25, No. 5, e2137, 17 p. (2018). MSC: 65F15 15B05 × Cite Format Result Cite Review PDF Full Text: DOI