Seminars usually take place either at
UPV/EHU, Seminar Room of the Mathematics Department, Facultad de Ciencias, on Thursdays at 12:00, or
BCAM, Seminar Room, on Thursdays at 17:00.
Some seminars were recorded, and the videos can be found together with the description of the seminar on the subpage related to the year the talk happened. You can also find them here.
To subscribe to the seminar mailing list, contact one of the organizers.
As of October 2nd, 2025, the count of talks reached 264.
UPV/EHU, Thursday, October 9th, 2025, 12:00 - 13:00
Title: Continuous density variations in the ocean
Théo Fradin - University of Bordeaux
The aim of this talk is to study the well-posedness of the incompressible Euler equations in an oceanic setting, including continuous density variations. Because of specific features of our setting (presence of a free-surface, small scale ratios, i.e. the shallow water parameter), a first approach will consist in studying the case of small density variations, which will lead to the justification of the well-known non-linear shallow water equations. We then move to a case where large density variations can be studied, which is when the density is strictly decreasing with height. This setting of so-called stable stratification is widely used in the study of geophysical flows, and is one of the main ingredients that contribute to the global oceanic circulation, regulating the Earth' climate.
BCAM, Thursday, October 16th, 2025, 17:00 - 18:00
Title: TBA
Marta Lewicka - University of Pittsburgh
TBA
TBA, Thursday, October 23rd, 2025
Title: TBA
TBA
TBA
UPV/EHU, Thursday, October 30th, 2025, 12:00 - 13:00
Title: TBA
Rubén de la Fuente - BCAM
TBA
BCAM, Thursday, November 6th, 2025
Title: TBA
Cole Jeffrey Jeznach
TBA
UPV/EHU, Thursday, November 13th, 2025
Title: Fourier analytic methods in the spectral theory of Schrödinger operators
Dr. Konstantin Merz - Institute of Analysis and Algebra and Institute for Partial Differential Equations
Estimating the location and accumulation of eigenvalues for Schrödinger operators is a classical problem at the intersection of spectral theory and mathematical physics. In this talk, we illustrate how Fourier analysis, in particular Fourier restriction, yields sharp eigenvalue estimates for Schrödinger-type operators with short-range potentials. We highlight the limitations of such methods for long-range potentials and show how they can be overcome by introducing randomness. Our results shed new light on the critical temperature for superconductivity in BCS theory and on the energy and lifetime of resonances in nuclear physics.