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 January 15th, 2026, the count of talks reached 279.
UPV/EHU, Thursday, January 29th, 2026, 12:00-13:00
Title: Coherent energy cascades in random Hamiltonian systems.
Anxo Biasi - Instituto Galego de Física de Altas Enerxías, Universidade de Santiago de Compostela.
The problem of Sobolev norm growth—namely, the transfer of energy from low to arbitrarily high modes—has been extensively studied in Hamiltonian systems with a deterministic structure, such as the cubic nonlinear Schrödinger equation. In this talk, I will present an extension of this problem to Hamiltonian systems dominated by random nonlinear interactions. I will first introduce analytic solutions describing three types of energy cascades that lead either to unbounded growth or to finite-time blow-up of Sobolev norms. After, I will present numerical simulations demonstrating the rapid emergence of these dynamics from incoherent initial conditions. Taken together, these results demonstrate coherent energy cascades as robust mechanisms of energy transfer in systems dominated by random structures.
TBD, Thursday, February 19th, 2026
Title: TBA
Yavar Kian - Université Rouen Normandie
TBA
BCAM, Thursday, February 26th, 2026, 17:00 -18:00
Title: On Liouville-type theorems for equations arising in fluid dynamics.
Gastón Vergara -
In this talk we will study some Liouville-type theorems for different three-dimensional systems describing the motion of fluids. These results are related to the uniqueness of weak solutions for such equations under some additional information on the velocity field, or other states, which are usually stated in the literature in terms of Lebesgue, Morrey, or BMO-1 spaces. Here we will consider Lebesgue spaces of variable exponent, which provides some interesting flexibility.
TBD, Tuesday, March 17th
Title: TBA
Manuel Cañizares - Johann Radon Institute (RICAM)
TBA
TBD, Thursday, March 26th, 2026
Title: TBA
Jin Tan - Chinese University of Hong Kong
TBA
TBD, Thursday, April 16th, 2026
Title: TBA
Eduard Feireisl - Czech Academy of Sciences
TBA