Recent talks (reverse chronological order)

2017

  • Computational methods for large-scale matrix equations: recent advances and applications
    27th Biennial Numerical Analysis Conference, 27-30 June 2017, University of Strathclyde, Glasgow (UK). (plenary)
    (keywords: linear matrix equations. Projection methods. (systems of) PDEs. Rational Krylov subspaces.)

  • Order reduction numerical methods for the algebraic Riccati equation
    Numoc 2017, June 19-23 2017, Rome. (invited)
    (keywords: Riccati equation. Projection methods. Linear-quadratic regulators. Rational Krylov subspaces. )

  • Computational methods for large-scale matrix equations and application to PDEs}
    Math. Dept, Politecnico di Torino, June 14, Torino. (invited)
    (keywords: linear matrix equations. Projection methods. (systems of) PDEs. Rational Krylov subspaces. )

    2016

  • Analysis of the rational Krylov subspace method for large-scale algebraic Riccati equations
    CIRM Conference on Numerical Linear Algebra and Applications. Oct. 24-28, 2016. Marseille, France. (invited)
    (keywords: Riccati equation. Projection methods. Linear-quadratic regulators. Rational Krylov subspaces. )

  • On unreduced KKT systems arising from Interior Point methods
    Dipartimento di Matematica, Universita' di Padova Oct. 14, 2016.
    (keywords: Interior Point methods. Structured linear systems. Reduced formulations. Preconditioning. )

  • Computational methods for large-scale linear matrix equations: recent advances
    Johann Bernoulli Institute for Mathematics and Computer Science, University of Groningen (NL), Sept. 22, 2016. (invited)
    (keywords: Iterative solution of linear matrix equations. Projection methods. Multiterm linear equations. )

  • On the numerical solution of large-scale linear matrix equations
    Conference on Complex Systems, Sept 19-22, 2016. Beurs Van Berlage, Amsterdam, NL. (invited)
    (keywords: Linear matrix equations. Projection methods. T-Sylvester equations. )

  • Preconditioning Newton methods for Optimal Control Problems with Sparsity Constraints
    5th IMA Conference on ``Numerical Linear Algebra and Optimization'', University of Birmingham, UK, 7 - 9 September 2016
    (keywords: Constrained optimization, sparsity constraints, saddle point linear systems, semi-smooth Newton iteration. )

  • Computational methods for large-scale linear matrix equations: recent advances
    5th ALAMA Conference on Linear Algebra, Matrix Analysis and Applications, University of Leon, Spain, 20 - 22 June 2016 (plenary)
    (keywords: Multiterm linear matrix equations. Projection methods. Applications. rational Krylov subspaces )

  • Computational methods for large-scale linear matrix equations and application to FDEs
    9th Workshop SDS2016 Structural Dynamical Systems: Computational Aspects, Capitolo, Monopoli (I), June 14-17, 2016. (invited)
    (keywords: fractional derivatives. Linear matrix equations. rational Krylov subspaces )

  • An Efficient Reduced Basis Solver for Stochastic Galerkin Matrix Equations
    SIAM Conf. Uncertainty Quantification, Lausanne, April 5-8, 2016. (minisymposium)
    (keywords: multiterm linear matrix equations, stochastic Galerkin method, rational Krylov subspaces )

    2015
  • Equazioni lineari matriciali. proprieta', metodi numerici ed applicazioni
    XX Congresso dell'Unione Matematica Italiana, Siena, 7-12 Settembre 2015. (plenary talk)
    (keywords: linear matrix equations, sparsity and decay, structured grids)

  • Equazioni matriciali lineari con piu' termini nella risoluzione numerica di SPDEs
    Calcolo scientifico e modelli matematici: alla ricerca delle cose nascoste attraverso le cose manifeste, 3-6 June 2015, Genova, Italy. (invited talk)
    (keywords: multiterm linear matrix equations, rational Krylov, PDEs w/stochastic terms)

  • Multiterm linear matrix equations and the numerical solution of (S)PDEs
    High performance computing in science and engineering, Karolinka, May 25-28, 2015, Czech Republic. (plenary)
    (keywords: multiterm linear matrix equations, rational Krylov, PDEs w/stochastic terms)

  • Decay pattern of matrices: application to matrix functions (and matrix equations)
    Numerical Algebra, Matrix Theory, Differential-Algebraic Equations, and Control Theory, Home page TU Berlin, May 6-9, 2015, Germany. (plenary)
    (keywords: large matrix functions, sparsity patterns, exponential decay)

  • Kronecker sums of matrices. Computation, sparsity properties and applications
    March 27, 2015, Dept Math Sciences, University of Bath. (invited talk)
    (keywords: Kronecker sums, sparsity patterns, exponential decay, adaptivity)

  • Functions of matrices with Kronecker sum structure: decay properties and computation
    March 23, 2015, Math Dept, University of Manchester. (invited talk)
    (keywords: large matrix functions, sparsity patterns, exponential decay, computing functions of Kronecker sums)

  • Kronecker sums of matrices. Computation, sparsity properties and applications
    March 6, 2015, IMATI-CNR, Pavia. (invited talk)
    (keywords: Kronecker sums, sparsity patterns, exponential decay, adaptivity)

    2014
  • The Sylvester matrix equation: computation and sparsity properties
    Nov 7, 2014, Dipartimento di Ingegneria Industriale, Universita' degli Studi di Firenze (invited talk)

  • Computational methods for large-scale matrix equations: recent advances
    Oct 2, 2014, Computer Science Dept., University of Maryland (USA). (invited talk)

  • Krylov subspace methods for large scale matrix equations
    SIAM Annual Meeting, July 7-11, 2014, Chicago (USA). (minisymp)

  • On the decay of the inverse of matrices that are sum of Kronecker products
    Workshop on Matrix Computations for Sparse Recovery, April 9-11, 2014, Berlin (D).

  • On preconditioning PDE-constrained optimization problems with control constraints
    Workshop on PDE-Constrained Optimization, 6-7 March 2014, Linz, Austria. (workshop by invitation)

    2013
  • On the numerical solution of large scale Riccati equation
    Workshop on Matrix Equations and Tensor Techniques, 10-11 October 2013, EPFL Lausanne, CH. (workshop by invitation)

  • Krylov subspace solvers and indefinite preconditioning of saddle point algebraic linear systems
    IFIP TC 7 / 2013 System Modelling and Optimization, 9-13 Sept 2013, Klagenfurt, Austria. (minisymp)

  • Computational methods for large-scale matrix equations: recent advances
    GAMM Workshop Applied and Numerical Linear Algebra, September 9th-10th 2013, Bergische Universitaet Wuppertal, D. (plenary)

  • Solving ill-posed linear systems with GMRES
    ENUMATH 2013, 26-30 August 2013, Lausanne, CH. (minisymp)

  • Solving ill-posed linear systems with GMRES
    25th Biennial Conference on Numerical Analysis, 25-28 June 2013, Dept. Math. and Stat., University of Strathclyde (UK). (minisymp)

  • Computational aspects in large scale matrix function approximations
    International Spring School on Matrix Functions and their applications (SSMF2013), Laboratoire Paul Painleve' UMR 8524 Universite' de Lille 1, FRANCE, 15-17 May, 2013. (4-hour lecture)

  • The wonder of matrices in scientific computing
    Topics in Mathematics, Dipartimento di Matematica, UniBO, May 8, 2013. (seminar)

  • Adaptive tangential interpolation in rational Krylov subspaces for MIMO model reduction
    Advances in Matrix Functions and Matrix Equations. Manchester, UK. April 10-12, 2013. (invited)

  • On the numerical solution of large-scale linear matrix equations
    ATMW Numerical Linear Algebra, IIT Guwahati, Assam, India, Jan 15-18th, 2013. (plenary)

    2012
  • Model-assisted effective large scale matrix computations
    CTAC, 16th Biennal Computational Techniques and Appl. Conference, Brisbane (AU) 23-26 Sept, 2012. (plenary)

  • Model-assisted effective large scale matrix computations
    SIAM Annual Meeting (AN12). Minneapolis, Minnesota. July 9-13, 2012. (plenary)

  • Solution of structured algebraic linear systems in PDE-constrained optimization problems
    SIMAI 2012, Biannual Meeting, Politecnico di Torino, June 25-29, 2012. (plenary)

  • Structural Spectral properties of symmetric saddle point problems
    SIAM Conference on Applied Linear Algebra, June 18-22, 2012 Valencia, Spain. (minisymp)

  • Exploring (un)conventional preconditioning strategies for large saddle point algebraic linear systems
    Swiss Numerics Colloquium 2012, April 13, 2012 Bern (plenary)

  • The rational Krylov subspace for parameter dependent systems
    MOPNET: EPSRC Matrix and Operator Pencil Network. Meeting 6: April 2-3, 2012, Bath (UK). (invited)

  • Indefinite Preconditioners for PDE-constrained optimization problems
    GAMM Annual Meeting, March 26-30, 2012, Darmstadt (D). (minisymp)

    2011
  • Iterative solvers for saddle point algebraic linear systems: tools of the trade
    ENUMATH 2011, Leicester, 5-9 Sept 2011. (plenary)

  • Rational Krylov subspace methods for large-scale Lyapunov equations
    ICIAM 2011, Vancouver, 18-22 July 2011. (minisymp)

  • On the use of Minimal Residual methods for solving indefinite symmetric structured linear systems
    ICIAM 2011, Vancouver, 18-22 July 2011. (minisymp)

  • On Jacobian model reduction for the time-domain inverse problem
    ICIAM 2011, Vancouver, 18-22 July 2011. (minisymp)

  • Solution of structured algebraic linear systems in PDE-constrained optimization problem.
    SIAM Conference on Computational Science and Engineering (CSE11) February 28, 2011 - March 4, 2011, Reno, Nevada (minisymp)

  • Solution of structured algebraic linear systems in PDE-constrained optimization problem.
    Mathematics Department, Temple University, Philadelphia, Feb. 23, 2011.

    2010
  • Adaptive rational Krylov subspaces for large-scale dynamical systems
    Model Reduction for Complex Dynamical Systems. December 2-4, 2010, TU Berlin, Germany.

  • Reduced order solution of certain PDE-constrained problems
    "Optimization, Design and Control" 16-17th September 2010, Oxford. (slides not yet available)


  • Acquired clustering properties of certain saddle point systems and applications
    Second IMA Conference on Numerical Linear Algebra and Optimisation, University of Birmingham, Sept. 13-15, 2010. (plenary)


  • Solution of structured algebraic linear systems in PDE-constrained optimization problems
    Erice 2010 Workshop on Nonlinear Optimization, Variational Inequalities and Equilibrium Problems, July 2-10, 2010. (plenary)

  • An implicitly-restarted Krylov subspace method for real symmetric/skew-symmetric eigenproblems
    Intl. Workshop on Accurate Solution of Eigenvalue Problems VIII (IWASEP VIII), Berlin (D), June 28-July 1, 2010 (plenary)

  • Da Google alle immagini satellitari: il valore degli autovalori
    Progetto Lauree Scientifiche, Dipartimento di Matematica, Universita' di Bologna, Marzo 2010.

    2009
  • Spectral Properties of Saddle Point Linear Systems and Iterative Solvers
    IMATI-CNR, Pavia, Dec. 1, 2009.

  • Advances in numerical projection methods for MOR of large-scale linear dynamical systems
    Schlumberger-Doll Research Center, Cambridge, Boston, Nov 3, 2009.

  • Matrix functions and large-scale matrix equations: Part I: Effective numerical solution strategies, Part II: Applications
    Conference of the Dutch-Flemish Numerical Analysis Communities, Zeist, Netherlands October 7-9, 2009. (plenary)

  • Spectral properties of preconditioned saddle point linear systems
    9th GAMM Workshop on Applied and Numerical Linear Algebra, Zurich, Switzerland, September 10 - 11, 2009. (plenary)

  • Spectral analysis of saddle point matrices with indefinite leading blocks
    Preconditioning Techniques For Scientific And Industrial Applications, August 24-26, 2009 Hong Kong. (plenary)

  • Convergence properties of preconditioned iterative solvers for saddle point linear systems
    ENUMATH 2009, Uppsala University - Sweden, June 29 - July 3, 2009 (minisymp)

  • Projection methods for large linear systems. Summer School and Advanced Workshop on Trends and Developments in Linear Algebra, ICTP Trieste, Italy. June 22rd - July 10th 2009. (school lectures)

  • Advances in projection-type methods for the numerical solution of the Lyapunov equation
    CICADA MIMS workshop on Numerics for Control and Simulation June 17, 2009.

  • Spectral analysis of saddle point matrices with indefinite leading blocks
    Advances and Perspectives on Numerical Methods for Saddle Point Problems, Banff (Canada), 13-17 April 2009.

  • Recent developments in Krylov Subspace Methods for Scientific Computations
    "Methods and algorithms for solving large algebraic systems on modern high performance computing systems", School CEA-EDF-INRIA, March 30 - April 3, 2009, INRIA, Sophia-Antipolis (F). (school lectures)

  • The Extended Krylov Subspace for Matrix Function Approximations: Analysis and Applications
    Institut fuer Mathematik. TU-Berlin, Jan 27, 2009.

  • The Extended Krylov Subspace for Matrix Function Approximations: Analysis and Applications
    Math. Dept., Wuppertal University, Jan 15, 2009.

    2008
  • Approssimazione di Funzioni di Matrici di grandi dimensioni ed Applicazioni
    Dipartimento di Ingegneria Strutturale, Politecnico di Milano, Nov 5, 2008.

  • Cimmino's method and the next generation of iterative solvers
    Invited Session devoted to prof. G. Cimmino. XXXIX Annual Conference of Italian Operational Research Society (AIRO), Ischia (NA), 8-11 Sept. 2008.

  • Spectral Properties of Saddle Point Linear Systems and Relations to Iterative Solvers Part I. Spectral Properties , Part II. Iterative Methods , Part III. Nonsymmetric Preconditioners . LMS Durham Symposium on Computational Linear Algebra for PDEs, Durham (UK), 14-24 July 2008. (plenary)

  • Approximation of functions of large matrices. Part I. Computational aspects , Part II. Application Problems Structural Dynamical Systems: Computational Aspects, Capitolo, Bari (Italy), June 2008. (plenary)

  • Approximation of functions of large matrices: computational aspects and applications
    Householder Symposium XVII, June 1-6, 2008, Zeuthen (D). (plenary)

  • Extended Krylov subspace method for matrix functions: new theoretical and computational results
    MIMS New Directions Workshop Functions of Matrices, The University of Manchester, May 15-16, 2008.

  • Analysis of projection methods for solving large-scale Lyapunov matrix equations
    GAMM Annual Meeting, Bremen, 31 March - 4 April 2008.

  • Numerical approximation of matrix functions and applications
    Universite' de Nice Sophia Antipolis, March 13, 2008.

  • Approssimazione di Funzioni di Matrici di grandi dimensioni ed Applicazioni
    Convegno biannuale del GNCS-Indam, Montecatini, 4-6 February 2008. (plenary)

    2007
  • Analysis of projection methods for solving large-scale Lyapunov matrix equations
    Workshop on "Matrix Analysis and Applications", CIRM Luminy, France, 15-19 October 2007.

  • Krylov Subspace Methods for Linear Systems and Matrix Equations
    Istituto di Matematica, Universita' di Roma ''La Sapienza'', 22 Maggio 2007.

  • Structured Preconditioners for Symmetric Saddle Point Problems
    Workshop on "Structured Perturbations, and Distance Problems in Matrix Computations", Math. Research and Conference Center, Bedlewo, Poland, 26-30 March 2007

  • Spectral considerations in the solution of parameterized linear systems
    Third Berlin-Manchester Workshop on Nonlinear Eigenvalue Problems, University of Manchester, March 22-23, 2007.

    2006
  • Rational function approximation to the matrix exponential operator
    Mathematics Institute, TU-Berlin, 6 December 2006.

  • Krylov Subspace Methods for Linear Systems and Matrix Equations
    SIAM-GAMM Applied Linear Algebra 2006, Duesseldorf, July 24-27, 2006. (plenary)

  • Indefinite inner products in iterative linear system solvers
    ILAS 2006, Amsterdam, July 18-21, 2006. (plenary)

  • Krylov subspace methods: a versatile tool in Scientific Computing
    ICCAM 2006, Leuven (B), July 10-14, 2006. (plenary)

  • Precondizionatori Strutturati per Sistemi algebrici di Punto Sella
    Dipartimento di Energetica "Stecco", Universita' di Firenze, July 4, 2006.

  • Sviluppi recenti nella risoluzione di sistemi lineari mediante sottospazi di Krylov
    Dipartimento di Ingegneria Strutturale, Politecnico di Milano, May 30, 2006.

  • Recent advances in approximation using Krylov subspaces
    Math.Department, University of Bath, April 28, 2006, Bath, UK.

  • Projection methods for approximating the matrix exponential, with applications
    GAMM Annual Meeting 2006, Berlin, March 27-31.

  • Projection methods for approximating matrix functions
    Department of Mathematics, Temple University, Philadelphia. March 1, 2006.

    2005
  • Analysis of projection-type methods for approximating the matrix exponential operator
    Model order reduction, coupled problems and optimization, Lorentz Center, Sept. 19-23, 2005, Leiden (NL).

  • Recent advances in approximation using Krylov subspaces
    Math.Department, University of Duesseldorf, July 25, 2005, Duesseldorf, D.

  • On the Eigenvalues of a Class of Saddle Point Matrices
    Workshop on Finite Elements and Fast Iterative Solvers, July 4-5, 2005, Manchester, UK.

  • Analysis of projection-type methods for approximating the matrix exponential operator
    Structural Dynamical Systems: Computational Aspects (SDS2005), June 26-29, 2005, Capitolo, Bari, Italy.

  • The Nullspace-free eigenvalue problem and the inexact Shift-and-Invert Lanczos method
    Dipartimento di Matematica, Universita' di Brescia, June 21, 2005, Italy.

  • Recent advances in approximation using Krylov subspaces
    Householder Symposium XVI, May 23-27, 2005, Seven Springs Mountain Resort, Champion, PA (USA).

  • Structured Preconditioners for Symmetric Saddle Point Problems}
    Int'l Conference on Preconditioning Techniques For Large Sparse Matrix Problems , Atlanta, May 19-21, 2005.

  • Recent advances in approximation using Krylov subspaces
    GAMM Annual Meeting, Luxemburg, March 28 - April 1, 2005

  • Recent advances in approximation using Krylov subspaces
    Universita' di Roma ''La Sapienza'', 8 March 2005.

    2004
  • Structured Preconditioners for Saddle Point Problems
    Institute fuer Mathematik, TU - Berlin, 24 November 2004.
  • Structured Preconditioners for Saddle Point Problems
    3rd International workshop on Parallel Matrix Algorithms and Applications (PMAA'04), 18-22 October, CIRM, Luminy, France, 2004
  • Numerical Solution of Parameter-dependent Large Algebraic Linear Systems
    GAMM Workshop Applied and Numerical Linear Algebra, 2-3 July. 2004, Hagen, Germany.
  • Variable accuracy of matrix-vector products in eigencomputation
    V International Workshop on Accurate Solution of Eigenvalue Problems, 28 June-1 July. 2004, Hagen, Germany.
  • Precondizionatori strutturati per problemi di punto sella
    Dipartimento di Matematica, Universita' di Bari, 20 Aprile 2004.
  • Inexact Krylov subspace methods: Theory and Applications
    Dipartimento di Matematica, Universita' di Bari, 19 Aprile 2004.
  • Metodi proiettivi inesatti per problemi agli autovalori
    Due Giorni di Algebra Lineare Numerica, Udine, Jan. 22-23, 2004.
    2003
  • Block Preconditioners for mixed FE formulations of the magnetostatic problem
    Solution Methods for Saddle Point Systems in Computatonal Mechanics Workshop, Santa Fe (NM) Dec. 3-6, 2003.
  • Risoluzione numerica di sistemi lineari con parametro quadratico ed applicazione a problemi ingegneristici
    CAPI 2003: Calcolo ad Alte Prestazioni, Milano, Nov. 13-14, 2003.
  • Inexact Krylov subspace methods: Theory and Applications
    Theoretical and Computational Aspects of Matrix Algorithms, 12-17 October 2003, Schloss Dagstuhl (D), Oct. 2003
  • Block triangular preconditioners for symmetric saddle-point problems
    XXI Int'l IAC Workshop. Numerical Linear Algebra and its Applications, Monopoli, Bari (Italy). Sept. 2003.
  • Inexact Krylov subspace methods: Theory and Applications
    XXI Int'l IAC Summer School. Numerical Linear Algebra and its Applications, Monopoli, Bari (Italy). Sept. 2003.
  • Block triangular preconditioners for symmetric saddle-point problems
    SIAM Conference on Applied Linear Algebra, Williamsburg (VA), July 2003.
  • Inexact Krylov Subspace methods: theory and applications
    (with D. Szyld) Sparse days at St. Girons (F), June 2003.
  • On the numerical solution of $(\sigma^2 A + \sigma B + C) x = b$ and application to structural dynamics
    Mathematics Department, Utrecht University (NL), May 2003.
    2002
  • The Nullspace-free eigenvalue problem and the inexact Shift-and-Invert Lanczos method
    Computer Science Dept., University of Maryland, Sept. 2002.
  • Inexact Block Preconditioners for Saddle-Point Problems
    Computational Linear Algebra and Applications, Milovy (CZ), Aug. 2002.
  • The Nullspace--free eigenvalue problem and the inexact Shift--and--invert Lanczos method
    Householder Symposium, Peebles, Scotland, June 2002.
  • Analysis of some structured preconditioners for saddle point problems
    Oxford University Computing Laboratory, Oxford, May 2002.
  • Block structured numerical linear algebra problems: two examples stemming from electromagnetics
    Math. Dept., UMIST Manchester, May 2002.
  • Flexible Inner-Outer Krylov Methods (and Inexact Krylov Methods)
    (with D. Szyld) Conf. 50 years of CG, 70 years of G. Golub, Zurich, Feb. 2002.
  • Tecniche di precondizionamento per problemi di punto sella
    "Due-giorni di Algebra Lineare Numerica", Pisa, Jan. 2002.
  • Metodi di tipo proiettivo per la risoluzione di sistemi lineari e tecniche di precondizionamento
    Universita' "La Sapienza", Roma, Jan. 2002.
    2001
  • Inexact Rayleigh quotient-type methods for eigenvalue computations
    University of Freiberg, Germany, Nov. 2001.
  • The behavior of Krylov subspace solvers on symmetric systems with matrix--dependent right--hand side
    (with M. Pennacchio) GAMM Workshop on Numerical Linear Algebra, Berlin, Sept. 2001.