Under Construction
Courses
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Topics in Low Rank Factorization and Data Analysis
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Lie Groups and Algebras
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Numerical Method for Graphics
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Krylov Methods and Applications
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Game Theory
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Algorithms and Data Structures
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Scientific Computing
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Programming Languages
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Computational Lab
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Schemes
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Elements of Computational Algebra
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Optimization
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Groups and Representations
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Elements of Algebraic Geometry
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Code Theory and Cryptography
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Neural Networks
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Didactics
Topics in Low Rank Factorization and Data Analysis Course 2024:
- PCA
- Handwritten notes for PCA Lessons: PDF [ENG]
- Videos for Lesson 3: Zip [ENG]
- Video for Lesson 4: Mp4 [ENG]
- Data PCA Session: Zip [ENG]
- Codes PCA Session: Zip [ENG]
- Clustering
- Handwritten notes for Clustering Lessons: PDF [ENG]
- Data Clustering Session: Zip
- Codes Clustering Session: Zip [ENG]
- NMF
- Handwritten notes for NMF Lessons: PDF [ENG]
- Slides and video for NMF Lesson: ZIP [ENG]
- Data NMF Session: Zip
- Codes NMF Session: Zip [ENG]
Lie Groups and Algebras Course 2018:
Numerical Method for Graphics Course 2018:
Krylov Methods and Applications Course 2018:
Algorithms and Data Structure Course :
Programming Languages Course :
Computational Lab :
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Maximal Bi-clique Extraction Problem: PDF [ENG]
Elements of Computational Algebra Course 2015:
- Notes of the course, main author Carlo Sircana: Notes [ITA]
- Jacobi Symbol and its computation: PDF [ENG]
- Programs used for the computation of Jacobi Symbol: Zip
Optimization Course :
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Dissertion on Plane Cutting Algorithms: PDF [ITA]
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Programs of Plane Cutting: Zip [ITA]
Groups and Representations Course 2016:
- Notes of the course: PDF [ITA]
Elements of Algebraic Geometry Course 2016:
Code Theory and Cryptography Course 2016:
Neural Network :
- Simple C++ Interface for Neural Networks:
Zip [ENG]
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Interests
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Articles
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Conferences
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Research
My main interests are the spectral analysis and the low-rank factorization of matrices.
I have worked on matrix sequences coming from the discretization of linear PDE,
on structured matrices used for quantum communications,
on random matrix polynomial with growing size and/or degree,
on spectral properties of matrices with functional entries,
on perturbation of Hermitian matrices,
and on iterative methods in signal processing.
Moreover, I have worked in community detection,
on clustering problems for directed graphs,
and on machine learning techniques aimed to identify symplex structures
through the lens of low-rank factorization methods,
with a focus on nonnegative matrix factorization.
More recently, I am interested on symmetric cones coming from Jordan algebras
and on indefinite quadratic problems with conic restrictions.
Supported by the ERC consolidator grant no 101085607 of the European Union (Sep 2023 - Jun 2026)
Project: Beyond Low-Rank Factorizations (eLinoR)
Articles, Preprints and Notes:
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Barbarino G.,
Claesson M.,
Ekström S.-E.,
Garoni C.,
Meadon D.,
Speleers H.
Matrix-less spectral approximation for large structured matrices
Bit Numer Math 65, 2 (Mar 2025)
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Barbarino G.,
Ekström S.-E.,
Garoni C.,
Meadon D.,
Serra-Capizzano S.,
Vassalos P.
From asymptotic distribution and vague convergence to uniform convergence, with numerical applications
Journal of Numerical Mathematics - to appear (Feb 2025).
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Barbarino G.,
Fanizza M.,
Giovannetti V.,
Mele F. A.
Achievable rates in non-asymptotic bosonic quantum communication
Arxiv (Feb 2025)
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Barbarino G., Garoni C.
GLT sequences and normal matrices
The Electronic Journal of Linear Algebra 41, pp. 1-20 (Jan 2025)
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Barbarino G., Orlitzky M.
The uniqueness of Lyapunov rank among symmetric cones
Draft (Dec 2024)
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Barbarino G., Gillis N.
On the Robustness of the Successive Projection Algorithm
Arxiv (Dec 2024)
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Barbarino G.
Ergodic Estimations for Toeplitz Sequences Generated by a Symbol
Arxiv (Dec 2024).
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Abdolali M.,
Barbarino G., Gillis N.
Dual Simplex Volume Maximization for Simplex-Structured Matrix Factorization
SIAM Journal on Imaging Sciences 17(4), 2362-2391 (Dec 2024) - PDF
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Barbarino G., Cavassi R.,
Cicone A.
Extension and convergence analysis of Iterative Filtering to spherical data
Linear Algebra and its Applications, in press (Jun 2024) - PDF
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Barbarino G.,
McWhirter J.G.,
Pestana J.,
Proudler I.,
Weiss S.
On Properties and Structure of the Analytic Singular Value Decomposition
IEEE Transactions on Signal Processing 72, pp. 2260-2275 (Apr 2024) - PDF
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Barbarino G.,
On the Periodicity of Singular Vectors and the Holomorphic Block-Circulant SVD on the Unit Circumference
Linear Algebra and its Applications, in press (Mar 2024) - PDF
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Barbarino G., Cicone A.
Stabilization and Variations to the Adaptive Local Iterative Filtering Algorithm: the Fast Resampled Iterative Filtering Method
Numerische Mathematik 156, 395-433 (Jan 2024) -
Online -
PDF
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Barbarino G.,
Ekström S.-E.,
Garoni C.,
Meadon D.,
Serra-Capizzano S.,
Vassalos P.
Spectral properties of flipped Toeplitz matrices
Arxiv (Dec 2023).
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Barbarino G., Noferini V.
On the Rellich eigendecomposition of para-Hermitian matrices and the sign characteristics of ∗-palindromic matrix polynomials
Linear Algebra and its Applications 672, 1-27 (Sep 2023) - PDF
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Barbarino G.,
Garoni C.
An extension of the theory of GLT sequences: sampling on asymptotically uniform grids
Linear and Multilinear Algebra 71, 12, pp. 2008-2025 (Aug 2023) - PDF
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Barbarino G., Noferini V.,
Van Dooren P.
Role extraction for digraphs via neighborhood pattern similarity
Physical Review E 106 (5), 054301 (Nov 2022) - PDF
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Barbarino G., Cicone A.
Conjectures on spectral properties of ALIF algorithm
Linear Algebra and Its Applications 647, pp. 127–152 (Aug 2022) - PDF
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Barbarino G.,
Ekström S.-E.,
Serra-Capizzano S.,
Vassalos P.
Theoretical results for eigenvalues, singular values, and eigenvectors of (flipped) Toeplitz matrices and related computational proposals
Arxiv (Jul 2022).
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Barbarino G., Noferini V.
The limit empirical spectral distribution of complex matrix polynomials
Random Matrices: Theory and Applications 11, 3 (Jul 2022) - PDF
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Barbarino G., Garoni C.,
Mazza M.,
Serra-Capizzano S.
Rectangular GLT sequences
Electronic Transactions on Numerical Analysis. Volume 55 (Jun 2022) 585--617 - PDF
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Barbarino G.,
Bianchi D.,
Garoni C.
Constructive approach to the monotone rearrangement of functions
Expositiones Mathematicae 40, 1 (Mar 2022) 155--175 - PDF
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Barbarino G., Noferini V.
The limit empirical spectral distribution of Gaussian monic complex matrix polynomials
Journal of Theoretical Probability, (Feb 2022) - PDF
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Barbarino G.
A systematic approach to reduced GLT
Bit Numer Math 62, 3 (Sep 2021) 681--743 - PDF
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Barbarino G., Serra-Capizzano S.
Non‐Hermitian perturbations of Hermitian matrix‐sequences and applications to the spectral analysis of the numerical approximation of partial differential equations
Numer Linear Algebra Appl. 2020;e2286 (Mar 2020) - PDF
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Barbarino G., Garoni C., Serra-Capizzano S.
Block Generalized Locally Toeplitz Sequences: Theory and Applications in the Multidimensional Case
Electronic transactions on numerical analysis ETNA 53:1 (Jan 2020) - PDF
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Barbarino G., Garoni C., Serra-Capizzano S.
Block Generalized Locally Toeplitz Sequences: Theory and Applications in the Unidimensional Case
Electronic transactions on numerical analysis ETNA 53:1 (Jan 2020) - PDF
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Barbarino G.
Spectral Measures
Structured Matrices in Numerical Linear Algebra. Springer INdAM Series, vol 30 (Apr 2019) - PDF
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Barbarino G.
Notes on asymptotic eigenvalues distribution on complex circles
Arxiv (2018)
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Barbarino G.
Conjectures on Perturbations of Hermitian Sequences
Arxiv (2018)
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Barbarino G.
Diagonal Matrix Sequences and their Spectral Symbols
Arxiv (2017)
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Barbarino G., Garoni C.
From convergence in measure to convergence of matrix-sequences through concave functions and
singular values
Electr. J. Linear Algebra 32 (2017) 500--513 - PDF
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Barbarino G.
Equivalence between GLT sequences and measurable functions
Linear Algebra Appl. 529 (2017) 397--412 - PDF
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Barbarino G.
Permutation NMF
Arxiv (2016)
Conferences, Summer Schools and Presentations
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About
2024 - now : Italian National Scientific Abilitation to the role of Associate Professor.
2023 - now : Post-Doctoral Researcher at
UMONS in Numerical Analysis
2020 - 2023 : Post-Doctoral Researcher at
Aalto University in Numerical Analysis
2016 - 2020 : Ph.D. Degree at SNS in Mathematics
2014 - 2016 : Master Degree at Pisa University and SNS in Applied Mathematics
2011 - 2014 : Bachelor Degree at Pisa University and SNS in Mathematics
Member of GNCS Indam ( Scientific Computing National Group )
Member of SIAM Activity Group on Linear Algebra (SIAG/LA)
Member of ILAS International Linear Algebra Society
Reviewer at ZbMATH ( Zentralblatt MATH ),
MR ( Mathematical Reviews - MathSciNet ),
and for scientific journals
Partial Curriculum Vitae
Researchgate Profile
ORCID
Google Scholar
SCOPUS
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Other
Partecipant and Organizer of Italian Mathematical Olympiad.
Some useful Links:
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Oliforum: official forum of Italian Mathematical Olympiad [ITA]
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Vid: official video-lessons of stages [ITA]
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IMO: International Mathematical Olympiad website [ENG]
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AoPS: Forum, Tutorials, Lessons and much more on Mathematics and Mathematical Olympiad [ENG]
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MateMate: blog on not-so-elementary problems [ITA]
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AndFog: collection of problems and interesting mathematical facts [ITA]
Chess Program for Terminal: Executable
Left Chess for Browser (under development): Website
Rischiatutto Department Edition, presented by Bargagnati
Other info
in the origin.