Seminars of the Portuguese Group on Special Functions,
Orthogonal Polynomials and Applications

The Group Seminars aim to amplify the voices of early-career researchers, particularly within the group’s areas of interest, though not exclusively. These informal seminars are designed to foster debate and spark new collaborations. They are organised by the group’s coordinator.

Upcoming seminars

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

  • 10 February 2025, from 14:30 to 15:30.
    • Giuseppina Barbieri (University of Salerno), Characterized subgroups of the circle group.
  • 14 March 2025, from 14:30 to 15:30.
    • Vanessa Botta (São Paulo State University), On quasi-orthogonal polynomials of order two.
  • 1 April 2025, from 14:30 to 15:30.
    • Galina Filipuk  (University of Warsaw), Painlevé equations and orthogonal polynomials.
  • 6 May 2025, from 14:30 to 15:30.
    • Emanuel Guariglia  (Wenzhou-Kean University), Vieta-Lucas wavelets.
  • 3 June 2025, from 14:30 to 15:30.
    • Manuel A. Facas Vicente/José Vitória (University of Coimbra), Polynomials whose roots are the differences of the roots of a given polynomial.

During the months of July and August, as is customary, our seminar does not take place since many events are scheduled during this period.

  •   18 September 2025, from 14:30 to 15:30.
    • Ruymán Cruz Barroso (University of La Laguna), Quasi-orthogonal polynomials and positive quadrature on the unit circle.

Previous seminars

  • 8 January 2025, from 14:30 to 15:30.
    • Lianet  De la Cruz Toranzo  (TU Bergakademie Freiberg), Hardy decomposition of first order Lipschitz functions by Clifford algebra-valued harmonic functions.
  • 3 December 2024, from 14:30 to 15:30.
    • Daniela Di Donato (University of Pavia), Rectifiability in Carnot groups.
  • 4 November 2024, from 14:30 to 15:30.
    • Daniele Puglisi (University of Catania), On a quasi-linear elliptic equation depending on the gradient.
  • 22 October 2024, from 14:30 to 15:30.
    • Sabina Sadigova (Institute of Mathematics and Mechanics, National Academy of Sciences of Azerbaijan), The concept of t-basis and vector-valued Hardy classes.
  • 20 September 2024, from 14:30 to 15:30.
    • Teresa A. Mesquita (Polytechnic Institute of Viana do Castelo & CMUP), Differential relations and other properties of two families of 2-orthogonal polynomial eigenfunctions.
  • 13 June 2024, from 14:30 to 15:30.
    • José Luis Cardoso (UTAD), Divided difference (quantum) operators: from Fourier expansions to function spaces associated with their inverse.
  • 7 May 2024, from 14:30 to 15:30.
    • Anabela Silva (University of Aveiro), An approach to the solvability of a fractional differential problem.
  • 23 April 2024, from 14:30 to 15:30.
    • Alberto Arenas (University of La Rioja), Discrete harmonic analysis related to classical orthogonal polynomials.
  • 19 March 2024, from 14:30 to 15:30.
    • Guillermo Gordillo-Núñez (University of Coimbra), The Schrödinger equation for the Rosen-Morse type potencial revisited with applications.
  • 15 February 2024, from 14:30 to 15:30.
    • Ana Filipa Loureiro , (University of Kent, UK), On special positive solutions of the first discrete Painlevé hierarchy.
  • 18 January 2024, from 14:30 to 15:30.
    • Dieudonné Mbouna (University of Sevilla), Classical and semi-classical orthogonal polynomials on lattices.
  • 21 December 2023, from 14:30 to 15:30.
    • Hélder Lima (KU Leuven), Multiple orthogonal polynomials associated with branched continued fractions for ratios of hypergeometric series.
  • 16 November 2023, from 14:30 to 15:30.
    • Alexandre Suzuki (University of Coimbra), Sturm's comparison theorem for classical discrete orthogonal polynomials.
  • 19 October 2023, from 14:30 to 15:30.
    • Pedro Ribeiro (University of Porto), Generalizations (in the spirit of Koshliakov) of some formulas from Ramanujan's Lost Notebook.
  • 21 September 2023, from 14:30 to 15:30.
    • Renato Álvarez-Nodarse (University of Sevilla), Studying the stability of solitary waves via special function theory.
  • 12 July 2023. Venue: Auditorium of FCUP Library - 2nd floor - FC1, University of Porto.
    • 14:45 Claude Brezinski (University of Lille), The birth of Orthogonal Polynomials.
    • 15:30 Pascal Maroni (CNRS-Paris VI), Quelques remarques au sujet de la décomposition quadratique de polynômes de Laguerre.
    • 15:45 Michela Redivo-Zaglia (University of Padova), Treatment of near-breakdown in the conjugate gradient algorithm.