30 citations · 293 across the 61 of their papers we have counts for
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Bochner-Riesz means on the Heisenberg group
Detlef Müller, Lars Niedorf, Andreas Seeger +1
We prove new boundedness results for Bochner-Riesz means associated with the spectral decomposition of the sub-Laplacian on the Heisenberg group . Our results ho…
Bochner-Riesz means at the critical index: Weighted and sparse bounds
David Beltran, Joris Roos, Andreas Seeger
We consider Bochner-Riesz means on weighted spaces, at the critical index . For every -weight we obtain an extension of Vargas' weak…
A sufficient condition for Haar multipliers in Triebel-Lizorkin spaces
Gustavo Garrigós, Andreas Seeger, Tino Ullrich
We consider Haar multiplier operators acting on Sobolev spaces, and more generally Triebel-Lizorkin spaces , for indices in which the Haar system is no…
Endpoint sparse domination for classes of multiplier transformations
David Beltran, Joris Roos, Andreas Seeger
We prove endpoint results for sparse domination of translation invariant multiscale operators. The results are formulated in terms of dilation invariant classes of Fourier multipli…
Spherical maximal operators on Heisenberg groups: Restricted dilation sets
Joris Roos, Andreas Seeger, Rajula Srivastava
Consider spherical means on the Heisenberg group with a codimension two incidence relation, and associated spherical local maximal functions where the dilations are restrict…
Sobolev spaces revisited
Haim Brezis, Andreas Seeger, Jean Van Schaftingen +1
We describe a recent, one-parameter family of characterizations of Sobolev and BV functions on , using sizes of superlevel sets of suitable difference quotients. This…