Sven-Erik Ekström

Assistant Professor

Uppsala University

Sweden

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Sven-Erik Ekström is an Assistant Professor at Uppsala University in Sweden. His research primarily focuses on spectral properties and computational applications of structured matrices, particularly Toeplitz matrices. He has published recent articles exploring topics such as matrix-less spectral approximations, eigenvalue computations, and the application of preconditioners for fractional diffusion equations.

Articles (10)

Year:

2025

Year:

2025

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2024

Year:

2023

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2022

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2022

Year:

2022

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2022

Year:

2021

Year:

2020

Collaborators (5)

Paris Vassalos

Associate Professor

Athens University of Economics and Business

GREECE

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Hendrik Speleers

ITALY

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Stefano Serra-Capizzano

University of Insubria

ITALY

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Isabella Furci

Assistant Professor (non Tenure-Track)

University of Genoa

ITALY

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Armando Coco

Associate Professor

University of Catania

ITALY

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Sven-Erik Ekström

Research Interests

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About

Articles (10)

Matrix-less spectral approximation for large structured matrices

Spectral properties of flipped Toeplitz matrices and computational applications

Matrix‐less methods for the spectral approximation of large non‐Hermitian Toeplitz matrices: A concise theoretical analysis and a numerical study

Spectral and norm estimates for matrix-sequences arising from a finite difference approximation of elliptic operators

Fast Toeplitz eigenvalue computations, joining interpolation-extrapolation matrix-less algorithms and simple-loop theory

Preconditioners for fractional diffusion equations based on the spectral symbol

Toeplitz momentary symbols: definition, results, and limitations in the spectral analysis of structured matrices

A matrix-less method to approximate the spectrum and the spectral function of Toeplitz matrices with real eigenvalues

Eigenvalues and eigenvectors of tau matrices with applications to Markov processes and economics

Eigenpairs of some particular band Toeplitz matrices: A comment

Collaborators (5)

Paris Vassalos

Hendrik Speleers

Stefano Serra-Capizzano

Isabella Furci

Armando Coco

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