Lars Niedorf

activity

20242026

collaborators

3 papers

math.CA2026

Bochner-Riesz means on the Heisenberg group

Detlef Müller, Lars Niedorf, Andreas Seeger +1

We prove new $L^{p}$ boundedness results for Bochner-Riesz means associated with the spectral decomposition of the sub-Laplacian on the Heisenberg group $H_{n}$ . Our results ho…

math.AP2025

Spectral multipliers on two-step stratified Lie groups with degenerate group structure

Lars Niedorf

Let $L$ be a sub-Laplacian on a two-step stratified Lie group $G$ of topological dimension $d$ . We prove new $L^{p}$ -spectral multiplier estimates under the sharp regularity conditio…

math.AP2024

Spectral multipliers on Métivier groups

Lars Niedorf

We prove an $L^{p}$ -spectral multiplier theorem under the sharp regularity condition $s > d ∣ 1/ p - 1/2 ∣$ for sub-Laplacians on Métivier groups. The proof is based on a rest…