Year: 2026
Type: preprint
Abstract: We prove a spectral multiplier theorem for the standard sub-Laplacian on the Engel group under a scale-invariant local $H^s$ condition with $s>2$. The multiplier operators $F(\mathcal L)$ are of weak type $(1,1)$ and bounded on $L^p$ for every $1
Source: arXiv (Cornell University)
Authors: Han, Zhicheng, Yang, Zhipeng
Institution: Leibniz University Hannover
Language: English
Subfield: Applied Mathematics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
Awards: G6285904573, G7357072266, G7592286726
OpenAlex ID: W7220918212