26 citations · 71 across the 12 of their papers we have counts for
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math.NA2019★ 26 cited
Preconditioners for Fractional Diffusion Equations Based on the Spectral Symbol
Nikos Barakitis, Sven-Erik Ekström, Paris Vassalos
It is well known that the discretization of fractional diffusion equations (FDEs) with fractional derivatives , using the so-called weighted and shifted Grünwald formula…
math.NA2019★ 8 cited
A Matrix-Less Method to Approximate the Spectrum and the Spectral Function of Toeplitz Matrices with Real Eigenvalues
Sven-Erik Ekström
It is known that the generating function of a sequence of Toeplitz matrices may not describe the asymptotic distribution of the eigenvalues of if is…
math.NA2019★ 3 cited
Approximating the Perfect Sampling Grids for Computing the Eigenvalues of Toeplitz-like Matrices Using the Spectral Symbol
Sven-Erik Ekström
In a series of papers the author and others have studied an asymptotic expansion of the errors of the eigenvalue approximation, using the spectral symbol, in connection with Toepli…