Journal articles
V. Noferini, L. Nyman, F. Poloni. Nearest matrix with multiple eigenvalues by Riemannian optimization. IMA J. Numer. Anal., To Appear. 2026.
V. Noferini, L. Nyman. Finding the nearest Omega-stable pencil with Riemannian optimization. Numer. Algor., 2025. https://doi.org/10.1007/s11075-025-02140-7
M. Gnazzo, V. Noferini, L. Nyman, F. Poloni. Riemann-Oracle: a general-purpose Riemannian optimizer to solve nearness problems in matrix theory. Found. Comput. Math., 2025. https://doi.org/10.1007/s10208-025-09731-9
F. Dopico, V. Noferini, L. Nyman. A Riemannian optimization method to compute the nearest singular pencil. SIAM J. Matrix Anal. Appl. 45(4), 2007--2038, 2024.
V. Noferini, L. Nyman, J. Pérez, M. C. Quintana. Perturbation theory of transfer function matrices. SIAM J. Matrix Anal. Appl. 44(3), 1299--1320, 2023.
Preprints
L. Nyman. Singular vector spaces for computing the structured distance to singularity. [Preprint] arxiv.org/abs/2603.01233
S. Güttel, L. Nyman. Flexible GMRES converges in two phases. [Preprint] arxiv.org/abs/2604.27971
Dissertations
Doctoral thesis: Eigenstructure of polynomial and rational matrices: perturbation theory and nearness problems. 2025. Supervised by Prof. Vanni Noferini
Master's thesis: Solving Systems of 3 Equations in 3 Variables via Resultants. 2021. Supervised by Prof. Vanni Noferini