Iberian Online Analysis Seminar

The Iberian Online Analysis Seminars mark the beginning of a new chapter in a series of online analysis seminars that started in November 2023, as an initiative of the Portuguese Group on Special Functions, Orthogonal Polynomials, and Applications, in collaboration with the University of Warsaw. These seminars have been characterized by the careful selection of their speakers. The seminars are now coordinated by Kenier Castillo, one of the original founders of the series, from the University of Coimbra (Portugal), and Renato Álvarez-Nodarse, from the University of Seville (Spain).

Upcoming seminars

Join the seminar by clicking here (Time Zone: Europe/Lisbon)

  • 30 October, from 15:30 to 16:30.
    • Francisco Gancedo (University of Sevilla, Spain), 2D Navier-Stokes free boundary: nonnegative density and viscosity contrast.
  • 17 November 2025, from 14:30 to 16:30
  •   Ilka Agricola (Chair of the Committee on Electronic Information and Communication of the IMU, Philipps-Universität Marburg, Germany).
    • Special Colloquium on Fraudulent Publishing in Mathematical Sciences, moderated by Jorge Buescu (EMS Vice-President, University of Lisbon, Portugal)

Title: The challenges of predatory journals and paper mills in mathematics: A glimpse at the parallel universe of fake science.

Abstract: In November 2023, Clarivate Plc announced that it had excluded the entire field of mathematics from the most recent edition of its influential list of authors of highly cited papers because of massive citation manipulation, which in return influences the so-called "Shanghai ranking" of top universities (or those claiming to be top). While most mathematicians would probably not care, the exclusion is in fact the tip of the iceberg of a parallel universe of predatory and mega-journals whose main purpose is to offer publishing opportunities for whoever is willing to pay the right price. I will explain how the system works, why we should care, and what measures we can all take against. In preparation, I invite you to think about the following questions: How often have you been contacted in the past months to attend a conference not in your field / submit a paper to  or edit a special issue in a journal you don't know / review an article within 10 days or so? What do you know about the following journals: "Mathematics", "Axioms" (published by MDPI), "Chaos, Solitons, Fractals" (Elsevier), "Advances in Difference Equations" (Springer)? Do you know the following mathematicians: Abdon Atangana, Dumitru Baleanu, Hari M. Srivastava?

This talk is related to my work as  Chair of the Committee on Publishing of the International Mathematical Union.

Suggested readers:
[1] https://www.mathunion.org/cop/documents/documents-produced-cop
[2] https://arxiv.org/abs/2509.09877
[3] https://arxiv.org/abs/2509.07257

    • Regular Seminar, moderated by Ana Ferreira (University of Minho, Portugal)

                TBA

  • 15 December 2025, from 15:30 to 16:30
    • Karl Grosse-Erdmann (Université de Mons, Belgium), Linear chaos - from an apparent paradox to an ubiquitous phenomenon.
  • 20 January 2026, from 14:30 to 15:30
    • Alessio Figalli (Fields Medal, ETH Zurich, Switzerland), Free boundary regularity for the obstacle problem.
  •  2 February 2026, from 14:30 to 15:30
    • Luis Vega (UPV/EHU & BCAM, Spain), The dynamics of viscous vortex filaments and the binormal curvature flow.

Previous seminars

  • 15 September, from 15:30 to 16:30.
  • 13 June, from 15:30 to 16:30. (This section is coordinated in collaboration with Giuseppina Barbieri, DipMat, University of Salerno)
    • Semyon Yakubovich (University of Porto, Portugal), Generalized product formula for Whittaker's functions and a novel class of index transforms
  • 22 May 2025, from 15:30 to 16:30. (This section is coordinated in collaboration with Giuseppina Barbieri, DipMat, University of Salerno)
    • Pavel Etingof (MIT, Cambridge, USA), Fractal behavior of tensor powers of the two-dimensional space in prime characteristic.
  • 29 April 2025, from 15:30 to 16:30.
  • 4 March 2025, from 15:30 to 16:30.
  • 18 February 2025, from 15:30 to 16:30.
    • Foilán M. Dopico (Universidad Carlos III de Madrid, Spain), Polynomial and rational matrices with prescribed data.
  • 14 January 2025, from 15:30 to 16:30.
    • Lajos Molnar (Bolyai Institute, University of Szeged, Hungary), Isometries and other symmetries of positive cones in operator algebras.
  • 13 December 2024, from 16:00 to 17:00.
    • F. Alberto Grünbaum (UC Berkeley, USA), The mathematics of bio-medical imaging: the past, the present and some open problems.
  • 12 November 2024, from 15:30 to 16:30.
  • 23 October 2024, from 15:30 to 16:30.
    • Erik Koelink (Radboud Universiteit, Netherlands), Matrix orthogonal polynomials: an exceptional example.
  • 24 September 2024, from 15:30 to 16:30.
  • 4 June 2024, from 15:30 to 16:30.
    • Richard M. Aron (Kent State University, USA), Homomorphisms on holomorphic functions in infinite dimensions.
  • 21 May 2024, from 15:30 to 16:30.
    • Elena Berdysheva (University of Cape Town, South Africa), Delsarte's extremal problem and packing on locally compact Abelian groups.
  • 25 April 2024, from 15:30 to 16:30.
    • Yuan Xu (University of Oregon, USA), "Classical" orthogonal polynomials of more than one variable.
  • 27 March 2024, from 15:30 to 16:30.
    • Atul Dixit (Indian Institute of Technology Gandhinagar, India), Mordell-Tornheim zeta functions, Hurwitz lift and functional equations of Herglotz-Zagier type functions.
  • 20 February 2024, from 15:30 to 16:30.
    • Alexei Zhedanov (Renmin University of China, China) CMV bispectrality of Baxter's biorthogonal polynomials and affine Hecke algebra.
  • 4 January 2024, from 15:30 to 16:30.
    • Edmund YM Chiang (The Hong Kong University of Sciences and Technology, China), Weyl-algebraic approach to special functions: a case of study.
  • 21 November 2023, from 15:30 to 16:30.
    • Tom Koornwinder (Korteweg-de Vries Institute for Mathematics, University of Amsterdam, Netherlands), Symmetric and nonsymmetric Askey-Wilson functions and symmetries of the Askey-Wilson DAHA.

     Two seminars held prior to the launch of the series:

  • 26 October 2023, from 15:30 to 16:30.
  • 12 September 2023, from 15:30 to 16:30.
    • Moisés Villegas (University of Cádiz, Spain), Norm attaining Bloch mappings on the complex unit disc.

     Previous Organizers:
The seminars were organized in collaboration with Galina Filipuk (September 2023 - June 2025) and Dieudonné Mbouna (September 2023 - November 2023), both from the University of Warsaw (Poland).