Journées Approximation, 6th edition

Salle de réunion, premier étage (Bât. M2, Cité Scientifique, ULille)

Salle de réunion, premier étage

Bât. M2, Cité Scientifique, ULille

Avenue Carl Gauss, 59655 Villeneuve d'Ascq Cedex

The international conférences "Journées Approximation" in Lille give opportunity for exchanging ideas by french, belgian and other european colleagues working on approximation theory, numerical  linear algebra and their applications. The ja2024 edition will be a two and a half day meeting in May 2024  from Wednesday 15th at 9 a.m. to Friday 17th at 2 p.m. with 40 minutes talks only by invitation. 

There will be also a poster session, please let us know if you want to contribute. ja2024 will also be the 2024 Annual Meeting of the EXPOWER network.

Inscriptions (free but mandatory) are open until April 15, 2024.

Some updated practical informations can be found here. Please find here a Zoom link for the talks of the Journées Approxiation. 

Invited talks are given by

The organization committee


Inscription ja2024
    • 1
      Polynomial and rational convergence rates for Laplace problems on planar domains
      Speaker: Nick Trefethen (Université de Harvard, USA)
    • 2
      On Strong Asymptotics of Multiple Orthogonal Polynomials for Angelesco Systems
      Speaker: Maxim Yattselev (Indiana University (USA))
    • 10:50 AM
      coffee break
    • 3
      Incursions on the discrete Painlevé I hierarchy
      Speaker: Ana Loureiro (University of Kent, UK)
    • 4
      Adaptive Thiele Interpolation
      Speaker: Oliver Salazar (ING Belgium)
    • 12:40 PM
      lunch Ascotel
    • 5
      Rational Fourier Approximation: Computation and Applications
      Speaker: André Weideman (Stellenbosch University, South Africa)
    • 6
      Spectral theorem for bounded banded matrices with positive bidiagonal factorization
      Speaker: Ana Foulquié (Universidade Aveiro, Portugal)
    • 3:50 PM
      coffee break
    • 7
      A least squares analog to the Nuttall-Pommerenke theorem
      Speaker: Laurent Baratchart (INRIA)
    • 8
      More than sparse interpolation: applications in signal processing and beyond
      Speaker: Wen-shin Lee (University of Stirling, UK)
    • 9
      Christoffel functions for multiple orthogonal polynomials
      Speaker: Walter Van Assche (KU Leuven, Belgium)
    • 10
      Antenna Array Synthesis Using Variable Projection
      Speaker: Ramonika Sengupta (Eindhoven University, Netherlands)
    • 10:50 AM
      coffee break
    • 11
      Markov chains in the theory of multiple orthogonal polynomials
      Speaker: Amilcar Branquinho (Universidade de Coimbra, Portugal)
    • 12
      Algorithms for normal forms of matrices of integers
      Speaker: George Labahn (University of Waterloo)
    • 12:40 PM
      lunch Ascotel
    • 13
      Sobolev orthogonality and boundary value problems
      Speaker: Miguel Pinar (Universidad Granda, Spain)
    • 14
      Defects and Dirt in Test and Measurement
      Speaker: Andreas Beutler (Mahr, Göttingen)
    • Coffee break & Poster Session & Meeting Expower
      • 15
        Arnoldi orthogonalization to tackle Sobolev least squares problem
        Speaker: Mr Amin Faghih (KU Leuven (Belgium))
      • 16
        The Lanczos Tau Framework for Time-Delay Systems
        Speakers: Mr Evert Provoost (KU Leuven, Belgium), Mr Wim Michiels (KU Leuven, Belgium)
    • 17
      Optimal prediction measures and polynomials of extremal growth
      Speaker: Franck Wielonsky (Université Aix-Marseille)
    • 18
      Fractional time derivative through the lens of Herglotz-Nevanlinna function theory
      Speaker: Yvonne Ou (University of Delaware, USA)
    • 6:30 PM
      Conference diner : Restaurant La table
    • 19
      MOCCA: A fast Algorithm for parallel MRI reconstruction using model based coil calibration
      Speaker: Gerlind Plonka (Université de Göttingen)
    • 20
      Chebyshev polynomials and Widom factors
      Speaker: Jacob Christiansen (University of Lund, Sweden)
    • 10:50 AM
      coffee break
    • 21
      Sub-Sampled Exponential Analysis in Antenna Applications
      Speaker: Dirk de Villiers (Stellenbosch University, South Africa)
    • 22
      Approximation of positive polynomials for global optimization
      Speaker: Bernard Mourrain (INRIA)
    • 12:40 PM
      lunch at Ascotel