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 February 26th, 2026, the count of talks reached 285.
EHU, Thursday, March 12th, 12:00 - 13:00
Title: $L^p$-estimates for singular integral operators along codimension one subspaces
Mikel Florez - EHU
In this talk, we will present recent results on $L^p$-estimates for maximal directional singular integral operators in $\mathbb{R}^n$. These operators are given by a Hörmander–Mihlin multiplier on an $(n-1)$-dimensional subspace and act trivially in the perpendicular direction. The subspace is allowed to depend measurably on the first $n-1$ variables of $\mathbb{R}^n$.
Assuming the subspace is non-degenerate (in the sense that it is away from a cone around $e_n$) and the function $f$ is frequency supported in a cone away from $\mathbb{R}^{n-1}$, we establish $L^p$-bounds for these operators for $p > 3/2$. If we additionally assume that $f$ is frequency supported in a single frequency band, we are able to extend the boundedness range to $p > 1$. We will also discuss why the non-degeneracy assumption cannot in general be removed, even in the band-limited case.
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