Matrix Equations and Tensor Techniques IX (METTIX)

Europe/Rome
Perugia

Perugia

Dipartimento di Matematica e Informatica Via Vanvitelli, 1 06123 Perugia (PG), Italy
Bruno Iannazzo
Description

The Matrix Equations and Tensor Techniques IX (METTIX) Workshop has been hosted on Thursday and Friday 09-10 September 2021 in Perugia, Italy, at the Department of Mathematics and Computer Science.

This is the ninth in a series of biennial appointments. As in previous meetings, the focus has been on recent theoretical and computational advances in the solution of tensor problems and linear and nonlinear matrix equations.

The meeting has been held in a hybrid format (virtual and in-person).

In collaboration with:

Dipartimento di Matematica - Università di Pisa
ILAS logo

DMI logo

ILAS logo

Important Dates

Deadline for submitting an abstract: August 1, 2021. August 11, 2021.

Deadline for registration: August 1, 2021. August 11, 2021.

Final decision: August 8, 2021. August 18, 2021.

Registration
Registration
Participants
  • Alberto Bucci
  • Alice Cortinovis
  • Antonio Cicone
  • Arianna Travaglini
  • Bart Vandereycken
  • Beatrice Meini
  • Bruno Iannazzo
  • Bulent Karasozen
  • Charles Colley
  • Christoph Strössner
  • Dana Lahat
  • Daniel Kressner
  • Dario Andrea Bini
  • Dario Fasino
  • David Persson
  • Davide Palitta
  • Domitilla Brandoni
  • Elena Addis
  • Eric Evert
  • Fabio Cassini
  • Federico Poloni
  • Fernando De Terán
  • Froilan M. Dopico
  • Gerhard Kirsten
  • Giulia Riganelli
  • Gülden Mülayim
  • Heike Faßbender
  • Hussam Al Daas
  • Hysan Lam
  • Hyun-Min Kim
  • Ivan Gerace
  • Ivonne Sgura
  • Jama Charles
  • Jamie Haddock
  • Jan Heiland
  • Jens Saak
  • Jeong-Hoon Ju
  • Jeremy Myers
  • Jetze Schuurmans
  • Jie Meng
  • Joao Cardoso
  • Jonathan Popa
  • June-Ho Lee
  • Lars Grasedyck
  • Leonardo Robol
  • Lieven De Lathauwer
  • Liping Zhang
  • Luca Moroni
  • Maher Moakher
  • Maren Klever
  • Martin Köhler
  • Massimiliano Fasi
  • Massimo Frittelli
  • Mayer Humi
  • Michele Benzi
  • Mirjeta Pasha
  • Moritz Travis Hof
  • Murat Uzunca
  • Nick Dewaele
  • Nicola Mastronardi
  • Patrick Kürschner
  • Patrizia Pucci
  • Peter Benner
  • Raphaël Widdershoven
  • Raul Curto
  • Ren-Cang Li
  • Sandra Augusta Santos
  • Seoha Lee
  • Sergey Dolgov
  • Sergey Matveev
  • Sergey Petrov
  • Silvia Noschese
  • souheil ezzedine
  • Stanislav Budzinskiy
  • Stanislav Morozov
  • Stefano Massei
  • Sushil Singla
  • Svajūnas Sajavičius
  • Taehyeong Kim
  • Tatjana Stykel
  • Tim A. Werthmann
  • Trang Dinh
  • Tzyy-Leng Horng
  • Valentina Giorgetti
  • Valeria Simoncini
  • Yeongrak Kim
  • Ying Liu
  • Youjin Lee
  • Yuanmeng Hu
  • Thursday, September 9
    • 8:30 AM 8:50 AM
      Other: Registration
    • 8:50 AM 9:00 AM
      Other: Opening remarks
    • 9:00 AM 9:40 AM
      From analysis to learning: Tensor-based assessment of latent similarity 40m Online

      Online

      Speaker: Dr Lieven De Lathauwer (KU Leuven)
    • 9:45 AM 10:45 AM
      Paper blitz: Robol, Palitta, Kuerschner, Uzunca, Singla
      • 9:45 AM
        Mixed precision recursive block diagonalization for bivariate functions of matrices 10m In-person

        In-person

        Speaker: Leonardo Robol (University of Pisa)
      • 9:55 AM
        Stein-based preconditioners for weak-constraint 4D-Var 10m In-person

        In-person

        Speaker: Davide Palitta (Alma Mater Studiorum, Università di Bologna)
      • 10:05 AM
        Inexactness in low-rank methods for large matrix equations 10m Online

        Online

        Speaker: Patrick Kürschner (Leipzig University of Applied Sciences (HTWK Leipzig))
      • 10:15 AM
        Non-intrusive model order reduction for cross-diffusion systems 10m Online

        Online

        Speaker: Prof. Murat Uzunca (Sinop University)
      • 10:25 AM
        A distance formula for tuples of doubly commuting matrices 10m Online

        Online

        Speaker: Sushil Singla (Shiv Nadar University)
    • 10:45 AM 11:10 AM
      Coffee break 25m
    • 11:10 AM 12:50 PM
      Talks: De Terán, Ren Cang Li, Addis, Meini, Kirsten
      • 11:10 AM
        On the consistency of $X^\top AX=B$ when $B$ is either symmetric or skew 20m Online

        Online

        Speaker: Fernando De Terán (Universidad Carlos III de Madrid)
      • 11:30 AM
        Recent Progresses on Highly Entrywise Accurate Methods For Matrix Equations 20m Online

        Online

        Speaker: Ren-Cang Li (University of Texas at Arlington)
      • 11:50 AM
        Elementwise accurate doubling algorithm for shifted M-matrix algebraic Riccati equations 20m In-presence

        In-presence

        Speaker: Elena Addis (università di Perugia)
      • 12:10 PM
        Palindromic linearization and numerical solution of nonsymmetric algebraic T-Riccati equations 20m In-presence

        In-presence

        Speaker: Beatrice Meini
      • 12:30 PM
        A matrix-oriented POD-DEIM algorithm applied to semilinear differential matrix equations 20m In-presence

        In-presence

        Speaker: Gerhard Kirsten (University of Bologna)
    • 12:50 PM 2:40 PM
      Lunch break 1h 50m
    • 2:40 PM 4:20 PM
      Talks: Werthmann, Klever, Dinh, Köhler, Cardoso
      • 2:40 PM
        Operator-dependent prolongation and restriction for parameter-dependent multigrid methods using low-rank tensor formats 20m Online

        Online

        Speaker: Mr Tim A. Werthmann (RWTH Aachen University)
      • 3:00 PM
        Low-rank tensor uniformization for tumor progression modeling 20m Online

        Online

        Speaker: Maren Klever (RWTH Aachen University)
      • 3:20 PM
        A predictor-corrector method in quantized tensor train format for the equilibrium of the chemical master equation 20m Online

        Online

        Speaker: Ms Trang Dinh
      • 3:40 PM
        A Successive Divide and Conquer Algorithm for the Unilateral Quadratic Matrix Equation 20m Online

        Online

        Speaker: Martin Köhler (MPI Magdeburg)
      • 4:00 PM
        Solving the Discrete Euler-Arnold Equations for the Generalized Rigid Body Motion 20m Online

        Online

        Speaker: Joao Cardoso (Instituto Politécnico de Coimbra - ISEC)
    • 4:20 PM 4:50 PM
      Coffee break 30m
    • 4:50 PM 5:50 PM
      Paper blitz: Persson, Heiland, Matveev, Curto, Petrov
      • 4:50 PM
        Improved variants of the Hutch++ algorithm for trace estimation 10m In-person

        In-person

        Speaker: David Persson (EPFL)
      • 5:00 PM
        Solving large-scale Riccati equations with indefinite quadratic terms 10m Online

        Online

        Speaker: Jan Heiland (Max Planck Institute for Dynamics of Complex Technical Systems)
      • 5:10 PM
        Model order reduction and utilization of the reduced basis for aggregation kinetic equations 10m Online

        Online

        Speaker: Sergey Matveev (Marchuk INM RAS and Lomonosov MSU)
      • 5:20 PM
        The Extended Aluthge Transform 10m Online

        Online

        Speaker: Raul Curto (University of Iowa)
      • 5:30 PM
        Matrix Completion with Sparse Measurement Errors 10m Online

        Online

        Speaker: Sergey Petrov (INM RAS)
    • 7:30 PM 9:30 PM
      Social dinner

      Social dinner at the Ristorante del Sole

  • Friday, September 10
    • 9:00 AM 9:40 AM
      Solving power series matrix equations encountered in stochastic processes by means of fixed point iterations 40m In-person

      In-person

      Speaker: Dario Andrea Bini (Department of Mathematics, University of Pisa)
    • 9:45 AM 10:45 AM
      Talks: Moakher, Jeong-Hoon Ju, Kim
      • 9:45 AM
        Solution of the matrix equation for geodesics associated with the Riemannian metric on the space of positive-definite matrices based on the power potential 20m Online

        Online

        Speaker: Maher Moakher (University of Tunis El Manar)
      • 10:05 AM
        Optimal Constant for Generalized Diagonal Update Method 20m Online

        Online

        Speaker: Jeong-Hoon Ju
      • 10:25 AM
        On Newton Method for the Minimal Positive Solution of a System of Multi-Variable Nonlinear Matrix Equations 20m Online

        Online

        Speaker: Taehyeong Kim
    • 10:45 AM 11:10 AM
      Coffee break 25m
    • 11:10 AM 12:50 PM
      Talks: Dewaele, Evert, Widdershoven, Al Daas, Budzinskiy
      • 11:10 AM
        Computing the condition number of tensor decompositions through Tucker compression 20m
        Speaker: Nick Dewaele (KU Leuven)
      • 11:30 AM
        A recursive eigenspace computation for the Canonical Polyadic decomposition 20m In-person

        In-person

        Speaker: Eric Evert (KU Leuven)
      • 11:50 AM
        Multiway data regression using a spline-type tensor decomposition 20m Online

        Online

        Speaker: Raphaël Widdershoven (Stadius - KU Leuven)
      • 12:10 PM
        Randomized Algorithms for Rounding the Tensor Train Format 20m Online

        Online

        Speaker: Hussam Al Daas (STFC, Rutherford Appleton Laboratory)
      • 12:30 PM
        On the number of elements needed for low-rank tensor train completion 20m Online

        Online

        Speaker: Stanislav Budzinskiy
    • 12:50 PM 2:40 PM
      Lunch break 1h 50m
    • 2:40 PM 4:00 PM
      Talks: Strossner, Brandoni, Cortinovis, Massei
      • 2:40 PM
        Solving PDEs on hypercubes using Chebyshev interpolation 20m In-person

        In-person

        Speaker: Christoph Strössner (EPFL)
      • 3:00 PM
        A Tensor-Train Dictionary Learning algorithm based on spectral proximal alternating linearized minimization 20m In-presence

        In-presence

        Speaker: Domitilla Brandoni (Università di Bologna)
      • 3:20 PM
        Divide and conquer methods for functions of matrices with banded or hierarchical low-rank structure 20m In-person

        In-person

        Speaker: Alice Cortinovis (EPFL)
      • 3:40 PM
        Hierarchical adaptive low-rank format with applications to discretized PDEs 20m
        Speaker: Stefano Massei (Eindhoven University of Technology)
    • 4:00 PM 4:30 PM
      Coffee break 30m
    • 4:30 PM 5:50 PM
      Talks: Frittelli, Cassini, Morozov, Colley
      • 4:30 PM
        Matrix-oriented FEM formulation for stationary and time-dependent PDEs on x-normal domains 20m Online

        Online

        Speaker: Massimo Frittelli (Università del Salento)
      • 4:50 PM
        A mu-mode integrator for solving evolution equations in Kronecker form 20m In-presence

        In-presence

        Speaker: Fabio Cassini (University of Trento)
      • 5:10 PM
        Decoupling Dominant Z-eigenvectors of Tensor Kronecker Products 20m Online

        Online

        Speaker: Charles Colley (Purdue University)
      • 5:30 PM
        On the low-rank approximations in the Chebyshev norm 20m Online

        Online

        Speaker: Stanislav Morozov (Marchuk Institute of Numerical Mathematics of the Russian Academy of Sciences)
    • 5:50 PM 6:00 PM
      Other: Closing remarks