3 papers
math.NA2026
Efficient Krylov solvers for inverse source problem in 2D space-time fractional diffusion equation
Asim Ilyas, Stefano Serra-Capizzano
In this work, we consider a two-dimensional time-space fractional diffusion equation with a variable coefficient and investigate the inverse source problem of reconstructing the so…
math.NA2026
Block Jacobi/Gauss-Seidel preconditioning for GLT sequences, and GLH sequences
Carlo Garoni, Stefano Serra-Capizzano
The theory of generalized locally Toeplitz (GLT) sequences is an apparatus for computing the spectral and singular value distribution of sequences of matrices that possess a (possi…
math.NA2026
Spectral distribution of Jacobi weighted histopolation matrices via GLT theory
Allal Guessab, Federico Nudo, Stefano Serra-Capizzano
In this paper we study a weighted histopolation problem on associated with Jacobi weights. In the first part of the present work we prove results in approximation theory,…