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07/26/2023
Stochastic pth root approximation of a stochastic matrix: A Riemannian optimization approach
We propose two approaches, based on Riemannian optimization, for computi...
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04/19/2023
Efficient computation of the sinc matrix function for the integration of second-order differential equations
This work deals with the numerical solution of systems of oscillatory se...
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11/11/2022
Theoretical error estimates for computing the matrix logarithm by Padé-type approximants
In this article, we focus on the error that is committed when computing ...
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10/29/2022
Alya towards Exascale: Algorithmic Scalability using PSCToolkit
In this paper, we describe some work aimed at upgrading the Alya code wi...
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02/01/2022
Efficient computation of the Wright function and its applications to fractional diffusion-wave equations
In this article, we deal with the efficient computation of the Wright fu...
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12/09/2021
Preconditioning Richards Equations: spectral analysis and parallel solution at very large scale
We consider here a cell-centered finite difference approximation of the ...
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10/11/2021
Nonlocal diffusion of variable order on graphs
Some aspects of nonlocal dynamics on directed and undirected networks fo...
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03/23/2021
Mittag-Leffler functions and their applications in network science
We describe a complete theory for walk-based centrality indices in compl...
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01/02/2021
Compatibility, embedding and regularization of non-local random walks on graphs
Several variants of the graph Laplacian have been introduced to model no...
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06/29/2020
AMG preconditioners for Linear Solvers towards Extreme Scale
Linear solvers for large and sparse systems are a key element of scienti...
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01/28/2020
Nonlocal PageRank
In this work we introduce and study a nonlocal version of the PageRank. ...
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01/27/2020
On the quality of matching-based aggregates for algebraic coarsening of SPD matrices in AMG
In this paper, we discuss a quality measure for an aggregation-based coa...
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03/05/2019